CVE-2026-96399

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.4% (26th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repository's external issue tracker settings could make any later rendering of matching content, such as viewing a README, crash the instance for all users.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 6, 2026

Last Modified

October 7, 2026

Advisory Details (4)

Auto-updated Oct 7, 2026
Patch available. Sources: github, github_pr, github_release.
github_release Patch Available

v28.0.0

Patch available: go-gitea/gitea v28.0.0

https://github.com/go-gitea/gitea/releases/tag/v28.0.0
generic

Gitea 28.0.0 is released | Gitea Blog

https://blog.gitea.com/release-of-28.0.0/
github_pr

enhance: improve issue-pattern capture groups and support both internal&external trackers enabled

Fix merged in go-gitea/gitea PR #39354 on 2026-09-18 — awaiting tagged release

https://github.com/go-gitea/gitea/pull/39354
githubMentions a patch (unverified)

Uncaught Exception and Out-of-bounds Read results in Gitea crash · Advisory · go-gitea/gitea · GitHub

https://github.com/go-gitea/gitea/security/advisories/GHSA-mw6q-qj47-9g5q

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:33 UTCEG score recompute
  2. 2026-10-09 20:08 UTCEPSS rescore
  3. 2026-10-08 21:01 UTCEG score recompute
  4. 2026-10-08 17:14 UTCEPSS rescore
  5. 2026-10-08 09:12 UTCEG score recompute
  6. 2026-10-07 23:48 UTCEPSS rescore
  7. 2026-10-07 20:22 UTCEG score recompute▲ 7.50
  8. 2026-10-07 20:21 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  9. 2026-10-06 20:31 UTCNVD update
  10. 2026-10-06 19:32 UTCEG score recompute
  11. 2026-10-06 19:31 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-96399?
CVE-2026-96399 is a high vulnerability published on October 6, 2026. A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repository's external issue tracker settings…
When was CVE-2026-96399 disclosed?
CVE-2026-96399 was first published on October 6, 2026, with the most recent update on October 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-96399 actively exploited?
CVE-2026-96399 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96399?
CVE-2026-96399 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-96399?
A fix for CVE-2026-96399 is available: update to the fixed version the vendor names in its advisory.

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