CVE-2026-73276: inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i

Published Sep 1, 2026
·
Updated

Gracefulness code ignored cases that should be rejected, resulting in possible HTTP Request Smuggling opportunities.

Other sources

inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i

— Microsoft

Affected Software

6 affected componentsFixes available
OpenOTP OTP>22.2<=27.3.4.17, >28.0<=28.5.0.6, >29.0<=29.0.6
inets>7.1.2<=9.3.2.7, >9.4<=9.6.2.3, >9.7<=9.7.2
httpd
Microsoft azl3 erlang 26.2.5.21-4<26.2.5.21-6
26.2.5.21-6
Microsoft azl3 erlang 26.2.5.21-6<26.2.5.21-6
26.2.5.21-6
debian/erlang<=1:25.2.3+dfsg-1+deb12u4, <=1:25.2.3+dfsg-1+deb12u1, <=1:27.3.4.1+dfsg-1+deb13u3
1:29.0.6+dfsg-11:29.1.1+dfsg-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 26.2.5.21-6
  2. Upgrade

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

    Fixed in 1:29.0.6+dfsg-1Fixed in 1:29.1.1+dfsg-1
  3. Upgrade

    Upgrade OTP to a version that resolves this vulnerability.

    Fixed in 27.3.4.17
  4. Upgrade

    Upgrade OTP to a version that resolves this vulnerability.

    Fixed in 28.5.0.6
  5. Upgrade

    Upgrade OTP to a version that resolves this vulnerability.

    Fixed in 29.0.6
  6. Upgrade

    Upgrade inets to a version that resolves this vulnerability.

    Fixed in 9.3.2.7
  7. Upgrade

    Upgrade inets to a version that resolves this vulnerability.

    Fixed in 9.6.2.3
  8. Upgrade

    Upgrade inets to a version that resolves this vulnerability.

    Fixed in 9.7.2

Event History

Sep 1, 2026
CVE Published
via MITRE·02:41 PM
Data Sourced
via MITRE·02:41 PM
DescriptionWeakness
Data Sourced
via NVD·03:17 PM
DescriptionSeverityWeakness
Sep 3, 2026
Data Sourced
via Microsoft·08:05 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:05 AM
DescriptionSeverity
Updated
via Microsoft·08:05 AM
Affected Software
Sep 28, 2026
Data Sourced
via Debian·03:38 PM
DescriptionAffected Software
Data Sourced
via Launchpad·03:38 PM
Description
Sep 29, 2026
Data Sourced
via Ubuntu·03:38 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

Which versions contain the fix?

The issue is fixed in OTP 27.3.4.17, OTP 28.5.0.6, and OTP 29.0.6. The corresponding fixed inets versions are 9.3.2.7, 9.6.2.3, and 9.7.2.

2

Which release ranges are affected?

Affected OTP releases are 22.2 through versions before 27.3.4.17, 28.0 through versions before 28.5.0.6, and 29.0 through versions before 29.0.6. Corresponding affected inets ranges are 7.1.2 through versions before 9.3.2.7, 9.4 through versions before 9.6.2.3, and 9.7 through versions before 9.7.2.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203