MGASA-2026-0583: Updated thunderbird package fixes security vulnerabilities
Displaying a message could load an attacker-chosen URL through an OpenPGP key attachment. (CVE-2026-118174) Content of other messages could be included when replying to a crafted message. (CVE-2026-118175) Bypass of remote UNC path restriction in mailbox: URLs. (CVE-2026-118176) Calendar discovery accepted local file and remote network share locations. (CVE-2026-118177) RSS feed could redirect its subscription to a local file or network share. (CVE-2026-118178) Request forgery via news: links. (CVE-2026-118179) Matrix homeserver could redirect the chat session to a local file or network share. (CVE-2026-118180) Integer overflow in libmime buffer growth could lead to heap corruption. (CVE-2026-110247) Use-after-free in S/MIME decryption during a security device password prompt. (CVE-2026-113869) Same-origin policy bypass in the DOM: Navigation component. (CVE-2026-117860) Sandbox escape in the DOM: Navigation component. (CVE-2026-117861) Privilege escalation due to incorrect boundary conditions in the Networking component. (CVE-2026-117862) Information disclosure due to uninitialized memory in the Audio/Video component. (CVE-2026-117863) Sandbox escape in the Form Manager component. (CVE-2026-117864) Use-after-free in the JavaScript: GC component. (CVE-2026-117865) Privilege escalation due to use-after-free in the Graphics: Canvas2D component. (CVE-2026-117866) Use-after-free in the Layout component. (CVE-2026-117867) Sandbox escape in the DOM: Networking component. (CVE-2026-117868) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117869) Use-after-free in the JavaScript Engine component. (CVE-2026-117870) Invalid pointer in the Graphics component. (CVE-2026-117871) Use-after-free in the JavaScript: Standard Library component. (CVE-2026-117872) Incorrect boundary conditions in the Audio/Video: Playback component. (CVE-2026-117873) Use-after-free in the Internationalization component. (CVE-2026-117874) Use-after-free in the Layout: Scrolling and Overflow component. (CVE-2026-117875) Use-after-free in the Layout: Text and Fonts component. (CVE-2026-117876) Use-after-free in the Layout: Text and Fonts component. (CVE-2026-117877) Other issue, use-after-free in the Storage: IndexedDB component. (CVE-2026-117878) Incorrect boundary conditions in the Layout: Tables component. (CVE-2026-117879) Use-after-free in the XML component. (CVE-2026-117880) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117881) Use-after-free in the Layout component. (CVE-2026-117882) Use-after-free in the DOM: HTML Parser component. (CVE-2026-117883) Use-after-free in the Networking component. (CVE-2026-117884) Use-after-free in the Layout: Grid component. (CVE-2026-117885) Incorrect boundary conditions in the Graphics: Text component. (CVE-2026-117886) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117887) Uninitialized memory in the Graphics: Canvas2D component. (CVE-2026-117888) Incorrect boundary conditions in the JavaScript Engine component. (CVE-2026-117889) JIT miscompilation in the JavaScript Engine: JIT component. (CVE-2026-117890) Use-after-free in the JavaScript Engine: JIT component. (CVE-2026-117891) Privilege escalation due to use-after-free in the WebRTC: Networking component. (CVE-2026-117892) Incorrect boundary conditions in the Security: PSM component. (CVE-2026-117893) Incorrect boundary conditions in the WebRTC: Signaling component. (CVE-2026-117894) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117895) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117896) Incorrect boundary conditions in the Layout: Tables component. (CVE-2026-117897) Use-after-free in the JavaScript Engine: JIT component. (CVE-2026-117898) Use-after-free in the Networking: HTTP component. (CVE-2026-117899) Use-after-free in the DOM: Editor component. (CVE-2026-117900) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117901) Use-after-free in the Layout: Text and Fonts component. (CVE-2026-117902) Use-after-free in the Audio/Video component. (CVE-2026-117903) Use-after-free in the JavaScript: GC component. (CVE-2026-117904) Use-after-free in the Audio/Video: Playback component. (CVE-2026-117905) Use-after-free in the CSS Parsing and Computation component. (CVE-2026-117906) Use-after-free in the Networking component. (CVE-2026-117907) Use-after-free in the Graphics: ImageLib component. (CVE-2026-117908) Use-after-free in the JavaScript: GC component. (CVE-2026-117909) Invalid pointer in the JavaScript Engine component. (CVE-2026-117910) Use-after-free in the Audio/Video: Playback component. (CVE-2026-117911) Same-origin policy bypass in the CSS Parsing and Computation component. (CVE-2026-117912) Use-after-free in the SVG component. (CVE-2026-117913) Use-after-free in the SVG component. (CVE-2026-117914) Incorrect boundary conditions in the Layout: Block and Inline component. (CVE-2026-117915) Use-after-free in the XSLT component. (CVE-2026-117916) Invalid pointer in the Graphics: WebRender component. (CVE-2026-117917) Use-after-free in the Graphics: Canvas2D component. (CVE-2026-117918) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117919) Use-after-free in the DOM: HTML Parser component. (CVE-2026-117920) Use-after-free in the CSS Parsing and Computation component. (CVE-2026-117921) Use-after-free in the Networking: WebSockets component. (CVE-2026-117922) Use-after-free in the Audio/Video component. (CVE-2026-117923) Use-after-free in the XSLT component. (CVE-2026-117924) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117925) Incorrect boundary conditions in the SVG component. (CVE-2026-117926) Use-after-free in the SVG component. (CVE-2026-117927) Same-origin policy bypass in the CSS Parsing and Computation component. (CVE-2026-117928) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117929) Use-after-free in the DOM: Bindings (WebIDL) component. (CVE-2026-117930) Use-after-free in the DOM: Events component. (CVE-2026-117931) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117932) Frame poisoning in the CSS Parsing and Computation component. (CVE-2026-117933) Use-after-free in the Layout component. (CVE-2026-117934) Use-after-free in the DOM: Bindings (WebIDL) component. (CVE-2026-117935) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117936) Invalid pointer in the JavaScript Engine component. (CVE-2026-117937) Use-after-free in the Layout component. (CVE-2026-117938) Use-after-free in the XML component. (CVE-2026-117939) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117940) Use-after-free in the DOM: CSS Object Model component. (CVE-2026-117941) Incorrect boundary conditions in the JavaScript Engine: JIT component. (CVE-2026-117942) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117943) Use-after-free in the Layout component. (CVE-2026-117944) Incorrect boundary conditions in the XML component. (CVE-2026-117945) Incorrect boundary conditions in the JavaScript Engine component. (CVE-2026-117946) Use-after-free in the XML component. (CVE-2026-117947) Use-after-free in the SVG component. (CVE-2026-117948) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117949) Incorrect boundary conditions in the DOM: Core & HTML component. (CVE-2026-117950) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117951) Uninitialized memory in the Networking component. (CVE-2026-117952) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117953) Use-after-free in the Layout: Positioned component. (CVE-2026-117954) JIT miscompilation in the JavaScript: WebAssembly component. (CVE-2026-117955) Privilege escalation in the DLL Services component. (CVE-2026-100801) Invalid pointer in the Nimbus Desktop Client component. (CVE-2026-117956) Cryptographic issue in the WebRTC: Networking component. (CVE-2026-117957) Site isolation issue in the Networking: HTTP component. (CVE-2026-117958) Site isolation issue in the DOM: Service Workers component. (CVE-2026-117959) Spoofing issue in the DOM: Core & HTML component. (CVE-2026-117960) Incorrect boundary conditions in the Layout: Text and Fonts component. (CVE-2026-117961) Sandbox escape due to incorrect boundary conditions in the Storage: Quota Manager component. (CVE-2026-117962) Incorrect boundary conditions in the DOM: Service Workers component. (CVE-2026-117963) Use-after-free in the Panning and Zooming component. (CVE-2026-117964) Same-origin policy bypass in the Address Bar component. (CVE-2026-117965) Site isolation issue in the Networking: HTTP component. (CVE-2026-117966) Mitigation bypass in the DOM: Security component. (CVE-2026-117967) Use-after-free in the DOM: Core & HTML component. (CVE-2026-117968) Invalid pointer in the JavaScript Engine: JIT component. (CVE-2026-117969) Race condition in the Disability Access APIs component. (CVE-2026-117970) Sandbox escape due to use-after-free in the Print Preview component. (CVE-2026-117971) Use-after-free in the Graphics component. (CVE-2026-117972) Use-after-free in the Networking: DNS component. (CVE-2026-117973) Use-after-free in the XML component. (CVE-2026-117974) Sandbox escape due to invalid pointer in the Graphics: WebRender component. (CVE-2026-117975) Site isolation issue in the DOM: Navigation component. (CVE-2026-117976) Other issue in the Console component. (CVE-2026-117977) Incorrect boundary conditions in the Graphics component. (CVE-2026-117978) Incorrect boundary conditions in the Graphics: WebRender component. (CVE-2026-117979) Use-after-free in the Graphics component. (CVE-2026-117980) Privilege escalation in the Toolkit component. (CVE-2026-117981) Invalid pointer in the JavaScript Engine: JIT component. (CVE-2026-117982) Use-after-free in the Graphics component. (CVE-2026-117983) Incorrect boundary conditions in the Layout: Scrolling and Overflow component. (CVE-2026-117984) Sandbox escape due to use-after-free in the Graphics component. (CVE-2026-117985) Use-after-free in the Graphics component. (CVE-2026-117986) Use-after-free in the Graphics component. (CVE-2026-117987) Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. (CVE-2026-117988) Use-after-free in the Graphics component. (CVE-2026-117989) Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. (CVE-2026-117990) Incorrect boundary conditions in the Layout: Text and Fonts component. (CVE-2026-117991) Information disclosure in the CSS Parsing and Computation component. (CVE-2026-117992) Integer overflow in the Graphics: Text component. (CVE-2026-117993) Use-after-free in the JavaScript: GC component. (CVE-2026-117994) Privilege escalation in the DOM: UI Events & Focus Handling component. (CVE-2026-117995) Incorrect boundary conditions in the WebRTC component. (CVE-2026-117996) Sandbox escape due to use-after-free in the Widget component. (CVE-2026-117997) Mitigation bypass in the DOM: Push Subscriptions component. (CVE-2026-117998) Race condition in the IPC component. (CVE-2026-117999) Information disclosure in the Networking: HTTP component. (CVE-2026-118000) Information disclosure due to race condition in the Networking component. (CVE-2026-118002) Information disclosure in the Networking: DNS component. (CVE-2026-118003) Incorrect boundary conditions in the CSS Transitions and Animations component. (CVE-2026-118004)
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
mageia/thunderbirdto a version that resolves this vulnerability.Fixed in 153.6.0-1.mga10
Event History
Child vulnerabilities
Contains the following vulnerabilities.
- CVE-2026-100801
- CVE-2026-110247
- CVE-2026-113869
- CVE-2026-117860
- CVE-2026-117861
- CVE-2026-117862
- CVE-2026-117863
- CVE-2026-117864
- CVE-2026-117865
- CVE-2026-117866
- CVE-2026-117867
- CVE-2026-117868
- CVE-2026-117869
- CVE-2026-117870
- CVE-2026-117871
- CVE-2026-117872
- CVE-2026-117873
- CVE-2026-117874
- CVE-2026-117875
- CVE-2026-117876
- CVE-2026-117877
- CVE-2026-117878
- CVE-2026-117879
- CVE-2026-117880
- CVE-2026-117881
- CVE-2026-117882
- CVE-2026-117883
- CVE-2026-117884
- CVE-2026-117885
- CVE-2026-117886
- CVE-2026-117887
- CVE-2026-117888
- CVE-2026-117889
- CVE-2026-117890
- CVE-2026-117891
- CVE-2026-117892
- CVE-2026-117893
- CVE-2026-117894
- CVE-2026-117895
- CVE-2026-117896
- CVE-2026-117897
- CVE-2026-117898
- CVE-2026-117899
- CVE-2026-117900
- CVE-2026-117901
- CVE-2026-117902
- CVE-2026-117903
- CVE-2026-117904
- CVE-2026-117905
- CVE-2026-117906
- CVE-2026-117907
- CVE-2026-117908
- CVE-2026-117909
- CVE-2026-117910
- CVE-2026-117911
- CVE-2026-117912
- CVE-2026-117913
- CVE-2026-117914
- CVE-2026-117915
- CVE-2026-117916
- CVE-2026-117917
- CVE-2026-117918
- CVE-2026-117919
- CVE-2026-117920
- CVE-2026-117921
- CVE-2026-117922
- CVE-2026-117923
- CVE-2026-117924
- CVE-2026-117925
- CVE-2026-117926
- CVE-2026-117927
- CVE-2026-117928
- CVE-2026-117929
- CVE-2026-117930
- CVE-2026-117931
- CVE-2026-117932
- CVE-2026-117933
- CVE-2026-117934
- CVE-2026-117935
- CVE-2026-117936
- CVE-2026-117937
- CVE-2026-117938
- CVE-2026-117939
- CVE-2026-117940
- CVE-2026-117941
- CVE-2026-117942
- CVE-2026-117943
- CVE-2026-117944
- CVE-2026-117945
- CVE-2026-117946
- CVE-2026-117947
- CVE-2026-117948
- CVE-2026-117949
- CVE-2026-117950
- CVE-2026-117951
- CVE-2026-117952
- CVE-2026-117953
- CVE-2026-117954
- CVE-2026-117955
- CVE-2026-117956
- CVE-2026-117957
- CVE-2026-117958
- CVE-2026-117959
- CVE-2026-117960
- CVE-2026-117961
- CVE-2026-117962
- CVE-2026-117963
- CVE-2026-117964
- CVE-2026-117965
- CVE-2026-117966
- CVE-2026-117967
- CVE-2026-117968
- CVE-2026-117969
- CVE-2026-117970
- CVE-2026-117971
- CVE-2026-117972
- CVE-2026-117973
- CVE-2026-117974
- CVE-2026-117975
- CVE-2026-117976
- CVE-2026-117977
- CVE-2026-117978
- CVE-2026-117979
- CVE-2026-117980
- CVE-2026-117981
- CVE-2026-117982
- CVE-2026-117983
- CVE-2026-117984
- CVE-2026-117985
- CVE-2026-117986
- CVE-2026-117987
- CVE-2026-117988
- CVE-2026-117989
- CVE-2026-117990
- CVE-2026-117991
- CVE-2026-117992
- CVE-2026-117993
- CVE-2026-117994
- CVE-2026-117995
- CVE-2026-117996
- CVE-2026-117997
- CVE-2026-117998
- CVE-2026-117999
- CVE-2026-118000
- CVE-2026-118002
- CVE-2026-118003
- CVE-2026-118004
- CVE-2026-118174
- CVE-2026-118175
- CVE-2026-118176
- CVE-2026-118177
- CVE-2026-118178
- CVE-2026-118179
- CVE-2026-118180
Frequently Asked Questions
What user actions or features can expose a Thunderbird user to these issues?
The advisory identifies exposure through displaying a message with an OpenPGP key attachment, replying to a crafted message, mailbox: URLs, calendar discovery, RSS subscriptions, news: links, and Matrix homeserver redirects. It also includes flaws in S/MIME decryption, DOM navigation, networking, audio/video, and form management components.
Can these flaws access local files or network shares?
Several listed issues involve redirection or location handling that can target local files or remote network shares, including calendar discovery, RSS feeds, Matrix homeservers, and a bypass of remote UNC path restrictions in mailbox: URLs. The advisory does not state what data can be read or whether user interaction is required in each case.
Are encrypted-email users affected by a distinct issue?
Yes. One issue is a use-after-free during S/MIME decryption when a security-device password prompt is shown. Another allows displaying a message to load an attacker-chosen URL through an OpenPGP key attachment.
Does the advisory provide temporary mitigations or affected package versions?
No temporary mitigations, affected version ranges, or fixed package version are included in the provided advisory data. The listed remediation is an updated Mageia Thunderbird package.