Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario.
CVE-2026-73278
CRITICALPre-NVD 9.89.8—Trending — 4 sources updated this week
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.8 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.5% (38th 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
9.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 9.8
- EG Score
- 9.8CRITICALmedium confidence
- EG Risk
- 59EG Risk 59/100CISA 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 computedSeverity98% × 45%Exploitation0% × 40%Automatability100% × 15%CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix. - EPSS PROB
- 0.5%
- EPSS %ILE
- 38th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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, 2026No fix on record yet. Sources: github_pr, github.
githubMentions a patch (unverified)
WebAuthn second factor is bypassed on OAuth2/OpenID sign-in (WebAuthn-only users) · Advisory · go-gitea/gitea · GitHub
https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28cgithub_pr
fix(auth): set WebAuthn user verification per request
Fix merged in go-gitea/gitea PR #38810 on 2026-08-08 — awaiting tagged release
https://github.com/go-gitea/gitea/pull/38810github_pr
fix(auth): set WebAuthn user verification per request
Fix merged in go-gitea/gitea PR #38805 on 2026-08-07 — awaiting tagged release
https://github.com/go-gitea/gitea/pull/38805Weakness Classification(1)
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.
- 2026-10-09 22:29 UTCEG score recompute
- 2026-10-09 20:07 UTCEPSS rescore
- 2026-10-08 19:53 UTCEG score recompute
- 2026-10-08 17:13 UTCEPSS rescore
- 2026-10-08 01:08 UTCEG score recompute
- 2026-10-07 23:48 UTCEPSS rescore
- 2026-10-07 20:22 UTCEG score recompute▲ 9.80
- 2026-10-07 20:21 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
- 2026-10-06 20:31 UTCNVD update
- 2026-10-06 19:42 UTCEG score recompute
- 2026-10-06 19:41 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-73278?
CVE-2026-73278 is a critical vulnerability published on October 6, 2026. Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during…
When was CVE-2026-73278 disclosed?
CVE-2026-73278 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-2026-73278 actively exploited?
CVE-2026-73278 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73278?
CVE-2026-73278 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-73278?
No fix for CVE-2026-73278 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-73278
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