CVE-2026-43715: Use After Free

Published Jun 29, 2026
·
Updated

A use-after-free issue was addressed with improved memory management.

Impact: maliciously crafted web content may lead to memory corruption

Advisory: https://webkitgtk.org/security/WSA-2026-0004.html WebKit Bug: https://bugs.webkit.org/showbug.cgi?id=313577

Other sources

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, iOS 26.7 and iPadOS 26.7, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to memory corruption.

— MITRE

Accelerate Framework. An out-of-bounds write issue was addressed with improved bounds checking.

— Apple

Accessibility. This issue was addressed with improved data protection.

— Apple

Accounts Framework. This issue was addressed with improved data protection.

— Apple

APFS. An out-of-bounds write issue was addressed with improved bounds checking.

— Apple

Credit

Vitaly Simonovich, Christian Meurer Xavier, Gurpreet Shergill, Merrick Hare, Drinor Selmanaj (Sentry), Khai Tran, John Lussier, Rhyru9, Kwak Kiyong, Song Nuri, Jonathan Alush-Aben, stratan@@5tratan(Almamater Technologies), Josef Korbel (Citadelo)(Talence Security), Tristan Madani@@TristanInSec(Talence Security), Gia Bui@@yabeow(Calif), Narendra Singh@@_3P1C, CVE-2026-43709, Tommy DeVoss@@thedawgyg(Braze Security Team), Юлия Мерцалова, Nan Wang@@eternalsakura13, dr3dd, Milad Nasr, Nicholas Carlini with Claude, Anthropic, Luke Francis, Soyeon Park(DEVCORE Research Team), Amy Burnett(DEVCORE Research Team), Khai Tran(DEVCORE Research Team), sherkito(DEVCORE Research Team), Kota Toda(DEVCORE Research Team), HexRabbit@@h3xr4bb1t(DEVCORE Research Team), NiNi@@terrynini38514(DEVCORE Research Team), Using GLM(Z), Brian Carpenter, Utkarsh Pal, Ignacio Sanmillan@@ulexec, Kwak Kiyong(Talence Security), Song Nuri(Talence Security), Maher Azzouzi(Calif), Tuan(Calif), Duc(Calif), OpenAI Codex Security - Amy Burnett, Evan Lambert, Mateusz Krzywicki (iVerify.io)(Braze Security Team), dr3dd(Braze Security Team), Nathaniel Oh@@calysteon, Arni Hardarson, Jody Ritonga, Behzad Najjarpour Jabbari@@_G4ru_, Aaron Grattafiori - NVIDIA AI Red Team, Josef Korbel, Idan Masas, CVE-2026-28979, impost0r (ret2plt), Hyunwoo Kim@@v4bel, Feng Xue(ThreatBook), XGPT(ThreatBook), Vladislav Shevchenko (Positive Technologies)(Baidu Security), Ye Zhang@@VAR10CK(Baidu Security), Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Lyutoon, Dun, 彦辰, stratan@@5tratan, Nik Tsytsarkin, Stanislav Jelezoglo, Utkarsh Pal(Almamater Technologies), Kagami Rosylight(Mozilla), Luke Francis(Z), Francisco Alonso@@revskills(Z), Shubham Chaskar(Z), Jiyong Yang@@Sy2n0(Z), 杉山 壮太(Z), lattice(Z), Behzad Najjarpour Jabbari@@_G4ru_(Z), Junyeong Lee(Z), Mooth.ai(Z), OGINOME Tomohito(Z), Song nuri(Talence Security), an anonymous researcher, Muhamad Syaiful, Niels Hofmans, OGINOME Tomohito, Shaheen Fazim, Mathis Mansière, Peter Malone, Richard Zana(Nosebeard Labs), Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Michael DePlante@@izobashi(TrendAI Zero Day Initiative), wh0am1i, Francisco Knabe, Tien-Chih Lin(CyCraft Technology), RedRays Security Team, Soyeon Park, Amy Burnett, Heiko Kiesel(SEEMOO), TU Darmstadt, Richard Zana, Meta Red Team X - Nik Tsytsarkin, Geoffrey Lovelace, Bruce Dang(Calif), Anthropic Research, Jiyong Yang, Justin O'Leary@@olearysec(olearysec), 진규정 (Gyujeong Jin, @@G1uN4sh, Gandalf4a(PKU), Anton Pakhunov, Meta Red Team X, Geonha Lee@@leegn4a, Chris Bailey - Short Circuit, Mateusz Jurczyk(Google Project Zero), Varik Matevosyan, f00l@@PPPF00L, 3ndy1@@_3ndy1, Bernhard Jackiewicz, Svetoslav Stolarov(Calif), Josh Maine(Calif), genter0, R4mbb(KRsecurity), Vladislav Shevchenko (Positive Technologies), Hiroki Imai (LAC Co., Ltd.), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Bhaswanth Chigurupati, OpenAI, Hüseyin Kabasakal@@HuseyinK01, Wang Yu, Kitten Food, Matthew Zamat, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Drin Raci(sentry), Yiğit Can YILMAZ@@yilmazcanyigit, Musaab Khan@@bxff, Saoud Khalifah, Hcamael, 章鱼哥 (aipyaipy.com)@@aipy, Hoffcona(IES Red Team), Ilya Andr (andrd3v), Franco Belman at Blackwing Intelligence, Hongsik Kim (mnur), Rahul Raj, Stuart Wallace, Dhiyanesh Selvaraj@@redroot97, Surya Narayan Kushwaha, Roman Zabicki, Filip Olszak, bubu(Shuffle Team), Jonghoon Han (Aegis)(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), Dawuge(Shuffle Team), Abhay Kailasia@@abhay_kailasia(Safran Mumbai India), Abodi Dawoud, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Johan Wahyudi, Armend Gashi, Lehan Dilusha Jayasingha, 이재영(Positive Technologies), Seung Je Seong(Positive Technologies), Jakob Pammer(Positive Technologies), Ilya Andr (andrd3v)(Positive Technologies), Jérôme Djouder, Sindre Sorhus, Constantin Clerc(Calif), Shad J(Calif), Huy Nguyen@@34306(Calif), huami1314@@huamidev, Niels Hofmans(sentry), Ruslan Dautov, Beomseok Oh@@KAIST, Yongdae Kim@@KAIST, CVE-2026-65414, jioundai, Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, an anonymous researcher(Calif), 章鱼哥 (aipyaipy.com)@@aipy(Calif), Roman Zabicki(Calif), Anna Groza@@pwnlambda(Calif), Siyeong kim, Meta Product Security, 정우 하@@0xfa11babe, AL Najafi, tamdao, Pavan Nallamothu, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, flower xu, Adriatik Raci, PETOWORKS의 Bugeun Choi@@Bugeun, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Cem Onat Karagun, Zhongcheng Li(IES Red Team), Calif.io in collaboration with Claude, Stuart Wallace(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), Jian Lee@@speedyfriend433, Gongyu Ma@@Mezone0, David Strnadel, Daniel Febrero, CJ Vana, Asaf Cohen, YingQi Shi@@Mas0nShi(DBAppSecurity's WeBin lab), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Daniel Williams, Anonymous(TrendAI Zero Day Initiative), ret2happy, James Duffy@@0x4A616D657344, Huỳnh Tấn Ngàn, Redon Gashi, Ashish Kunwar, hxr1, Ashish Kunwar(MurphySec), f0r(MurphySec), Mahmoud Abdelmoniem, DARKNAVY@@DarkNavyOrg, Fábio Luís@@scanpt, Nicolas Rabrenovic, Pasquale Scola(STAR Labs SG Pte), Gor Aleksanyan, impost0r (ret2plt)(Appknox), Ruslan Dautov(Appknox), Aleksandr Tarasikov(Appknox), jay(Appknox), Dhiyanesh Selvaraj@@redroot97(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Lyutoon(STAR Labs SG Pte), DongJun Kim (smlijun) with UIUC(STAR Labs SG Pte), Hwiwon Lee (hwiwonl) with UIUC(STAR Labs SG Pte), Jongseong Kim (nevul37) with UIUC(STAR Labs SG Pte), Younggi Park (grill66) with UIUC(STAR Labs SG Pte), Peter Malone(STAR Labs SG Pte), an anonymous researcher(STAR Labs SG Pte), Hari Shanmugam (The Hxr1)(STAR Labs SG Pte), Marco Grassi, Daniele Castronovo, Michal Kosiorek, Ruslan Dautov(Baidu Security), 재영 정(Baidu Security), (Rao Ali Nawaz)@@rootxran(Baidu Security), Chanwit Muenprakoddee (ChemIndy)(Baidu Security), an anonymous researcher(Baidu Security), Franco Belman at Blackwing Intelligence(Calif), Christian Figueroa(Calif), Johnny Franks@@0xjohnny(Calif), Ashmit Sharma & Atul RV(Calif), Peter Malone(Calif), Muhamad Syaiful(Calif), Muneeb Amin Bhat(Calif), Dhiyanesh Selvaraj@@redroot97(Calif), Ali Marzouq(Calif), Bountyy Oy - Mihalis Haatainen(Calif), Eddy Tsalolikhin, beist(ASU SEFCOM), Adam Doupé(ASU SEFCOM), Dun(STAR Labs SG Pte), Johnny Franks@@0xjohnny, Asjid Kalam@@odinshell, Ryan Hileman via Xint Code (xint.io), Lukas Gerlach, YingMuo@@YingMuo(DEVCORE Research Team), Tristan Rousseau, CVE-2026-4424, Daisuke Hatakeyama Research)@@SYZD, Seonung Park, ALTV!ST (altvi.st/), CVE-2026-3784, CVE-2026-3783, Manuel Fernandez (Stackhopper Security), Somair Ansar(Calif), Abhijeet Singh (linkedin.com/in/abhiunix/), Omar Cerrito, Jian Zhou, Ye Zhang, Dun(DARKNAVY), deepsec@@DarkNavyOrg(DARKNAVY), 이재영, Rajdip Dey Sarkar, Arni Hardarson (Neonix Security), HvxyZLF

Affected Software

15 affected componentsFixes available
Apple Safari<26.5.2
26.5.2
Apple macOS Tahoe<26.5.2
26.5.2
Apple iOS<26.5.2
26.5.2
Apple iPadOS<26.5.2
26.5.2
Apple WatchOS<26.6
26.6
Apple tvOS<26.6
26.6
Apple visionOS<26.6
26.6
Apple iOS<26.7
26.7
Apple iPadOS<26.7
26.7
Apple Safari<26.5.2
Apple iPadOS<26.5.2
Apple iPhone OS<26.5.2
Apple macOS>=26.0<26.5.2
debian/webkit2gtk<=2.50.6-1~deb12u2, <=2.50.6-1~deb12u1
2.52.6-1~deb13u12.54.0-1~deb13u32.52.6-12.54.2-2
debian/wpewebkit<=2.38.6-1, <=2.48.3-1
2.54.2-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.5.2
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.6
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26.7
  4. Upgrade

    Upgrade debian/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.52.6-1~deb13u1Fixed in 2.54.0-1~deb13u3Fixed in 2.52.6-1Fixed in 2.54.2-2
  5. Upgrade

    Upgrade debian/wpewebkit to a version that resolves this vulnerability.

    Fixed in 2.54.2-1
  6. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 26.5.2
  7. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26.5.2
  8. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26.5.2
  9. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26.7
  10. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26.7
  11. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.5.2
  12. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 26.6
  13. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 26.6
  14. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 26.6

Event History

Jun 29, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
CVE Published
via MITRE·07:42 PM
Data Sourced
via MITRE·07:42 PM
DescriptionWeakness
Data Sourced
via NVD·08:17 PM
DescriptionSeverityWeaknessAffected Software
Jul 14, 2026
Data Sourced
via Red Hat·07:09 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-43715?

CVE-2026-43715 has a high severity rating of 8.8 on the CVSS scale.

2

How do I fix CVE-2026-43715?

To fix CVE-2026-43715, update to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, or macOS Tahoe 26.5.2.

3

What kind of issue is addressed in CVE-2026-43715?

CVE-2026-43715 addresses a use-after-free vulnerability that could lead to memory corruption.

4

Which platforms are affected by CVE-2026-43715?

CVE-2026-43715 affects Apple iOS, iPadOS, macOS Tahoe, and Safari.

5

What can be the consequences of CVE-2026-43715 if exploited?

Exploitation of CVE-2026-43715 may result in memory corruption due to processing maliciously crafted web content.

Company

Resources

Contact

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