[security][HIGH] nghttp2 1.66.0: CVE-2026-27135 require triage #3

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opened 2026-05-25 20:44:50 +03:00 by sbelikov · 0 comments

sbelikov commented

2026-05-25 20:44:50 +03:00

Owner

CVE triage request / Запрос на разбор CVE

Package / Пакет

Package: nghttp2
Version: 1.66.0
EVR: 1.66.0-1
Category: -
Policy class: -
NiceOS policy class: -
Owner: -
Severity: HIGH
Max CVSS: 7.5
CVE count: 1
Included NiceOS statuses: needs_triage
Included match types: cpe-range

LLM recommendation / Рекомендация LLM

RU

Для пакета nghttp2 1.66.0 найдены CVE-кандидаты по данным NVD/CPE: CVE-2026-27135. Требуется triage security-team.

Проверить применимость CVE к сборке НАЙС.ОС, сопоставить с upstream/vendor advisory, определить статус affected/fixed/not_affected и при необходимости подготовить обновление пакета.

Рекомендуемое действие: needs_triage

Подсказка по целевой версии: -

Проверки: Проверить сборку RPM, обновление пакета, совместимость зависимостей, service/CLI smoke tests и регрессионные сценарии по классу пакета.

Риски: Автоматическое совпадение NVD/CPE не является финальным вердиктом по НАЙС.ОС.

EN

NVD/CPE candidate CVEs were found for nghttp2 1.66.0: CVE-2026-27135. Security-team triage is required.

Verify CVE applicability to the NiceOS build, compare with upstream/vendor advisories, set affected/fixed/not_affected status, and prepare a package update if required.

Recommended action: needs_triage

Target version hint: -

Tests: Run RPM build, package upgrade, dependency compatibility, service/CLI smoke tests, and package-class-specific regression tests.

Risks: An automatic NVD/CPE match is not the final NiceOS vulnerability verdict.

CVE candidates from NVD/CPE

CVE	Severity	CVSS	Match	Confidence	NiceOS status	Fixed in	Existing issue	Reason
CVE-2026-27135	HIGH	7.5	cpe-range	85	needs_triage			package version is inside version range

Descriptions

CVE-2026-27135

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.

Scanner integration / Интеграция со сканером

This issue was generated from niceos_cve_matches after the SPEC/Forgejo evidence pass.
After real creation, this script writes forgejo_issue_open rows into niceos_cve_evidence and marks the selected CVE rows as issue_open, so the next scanner/creator run does not duplicate the issue.

Maintainer checklist

Verify whether each CVE applies to the NiceOS build.
Compare NVD data with upstream/vendor advisory.
Set final NiceOS status: affected, fixed, not_affected, false_positive, deferred, or not_in_cloud_image.
If affected, decide update/backport strategy according to package policy class.
Run package-class-specific build, upgrade and regression tests.
Add/update niceos_cve_triage entry.
Create NICE-SA advisory if a security update is shipped.

Machine metadata

{
  "cves": [
    "CVE-2026-27135"
  ],
  "fingerprint": "5fd524abaa813f312780",
  "generated_at": "2026-05-25T17:44:49Z",
  "match_ids": [
    1599
  ],
  "match_types": [
    "cpe-range"
  ],
  "package": "nghttp2",
  "prompt_version": "niceos_cve_issue_analysis_v2",
  "statuses": [
    "needs_triage"
  ],
  "tool": "niceos_cve_create_issues.py",
  "tool_version": "2.0",
  "version": "1.66.0"
}

# CVE triage request / Запрос на разбор CVE ## Package / Пакет - Package: `nghttp2` - Version: `1.66.0` - EVR: `1.66.0-1` - Category: `-` - Policy class: `-` - NiceOS policy class: `-` - Owner: `-` - Severity: `HIGH` - Max CVSS: `7.5` - CVE count: `1` - Included NiceOS statuses: `needs_triage` - Included match types: `cpe-range` ## LLM recommendation / Рекомендация LLM ### RU Для пакета nghttp2 1.66.0 найдены CVE-кандидаты по данным NVD/CPE: CVE-2026-27135. Требуется triage security-team. Проверить применимость CVE к сборке НАЙС.ОС, сопоставить с upstream/vendor advisory, определить статус affected/fixed/not_affected и при необходимости подготовить обновление пакета. **Рекомендуемое действие:** `needs_triage` **Подсказка по целевой версии:** `-` **Проверки:** Проверить сборку RPM, обновление пакета, совместимость зависимостей, service/CLI smoke tests и регрессионные сценарии по классу пакета. **Риски:** Автоматическое совпадение NVD/CPE не является финальным вердиктом по НАЙС.ОС. ### EN NVD/CPE candidate CVEs were found for nghttp2 1.66.0: CVE-2026-27135. Security-team triage is required. Verify CVE applicability to the NiceOS build, compare with upstream/vendor advisories, set affected/fixed/not_affected status, and prepare a package update if required. **Recommended action:** `needs_triage` **Target version hint:** `-` **Tests:** Run RPM build, package upgrade, dependency compatibility, service/CLI smoke tests, and package-class-specific regression tests. **Risks:** An automatic NVD/CPE match is not the final NiceOS vulnerability verdict. ## CVE candidates from NVD/CPE | CVE | Severity | CVSS | Match | Confidence | NiceOS status | Fixed in | Existing issue | Reason | |---|---|---:|---|---:|---|---|---|---| | CVE-2026-27135 | HIGH | 7.5 | cpe-range | 85 | needs_triage | | | package version is inside version range | ## Descriptions ### CVE-2026-27135 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. ## Scanner integration / Интеграция со сканером This issue was generated from `niceos_cve_matches` after the SPEC/Forgejo evidence pass. After real creation, this script writes `forgejo_issue_open` rows into `niceos_cve_evidence` and marks the selected CVE rows as `issue_open`, so the next scanner/creator run does not duplicate the issue. ## Maintainer checklist - [ ] Verify whether each CVE applies to the NiceOS build. - [ ] Compare NVD data with upstream/vendor advisory. - [ ] Set final NiceOS status: `affected`, `fixed`, `not_affected`, `false_positive`, `deferred`, or `not_in_cloud_image`. - [ ] If affected, decide update/backport strategy according to package policy class. - [ ] Run package-class-specific build, upgrade and regression tests. - [ ] Add/update `niceos_cve_triage` entry. - [ ] Create `NICE-SA` advisory if a security update is shipped. ## Machine metadata ```json { "cves": [ "CVE-2026-27135" ], "fingerprint": "5fd524abaa813f312780", "generated_at": "2026-05-25T17:44:49Z", "match_ids": [ 1599 ], "match_types": [ "cpe-range" ], "package": "nghttp2", "prompt_version": "niceos_cve_issue_analysis_v2", "statuses": [ "needs_triage" ], "tool": "niceos_cve_create_issues.py", "tool_version": "2.0", "version": "1.66.0" } ```

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2026-05-25 20:44:50 +03:00