SUSE-SU-2026:1056-1
Vulnerability from csaf_suse - Published: 2026-03-26 08:57 - Updated: 2026-03-26 08:57Summary
Security update for nghttp2
Severity
Important
Notes
Title of the patch: Security update for nghttp2
Description of the patch: This update for nghttp2 fixes the following issues:
- CVE-2026-27135: Assertion failure due to missing state validation can lead to DoS (bsc#1259845).
Patchnames: SUSE-2026-1056,SUSE-SLE-SERVER-12-SP5-LTSS-2026-1056,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1056
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
7.5 (High)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
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"ids": [
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"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-27135"
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"category": "general",
"text": "nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data after one of those APIs is called. Then receiving a malformed frame that causes FRAME_SIZE_ERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available.",
"title": "CVE description"
}
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"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"threats": [
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"date": "2026-03-26T08:57:39Z",
"details": "important"
}
],
"title": "CVE-2026-27135"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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