CVE-2026-20779

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. 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: epss, secondary
Elevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Gitea versions from 1.5.0 before 1.26.3 have a TOTP single-use enforcement defect that allows a valid TOTP code to be accepted more than once across web two-factor authentication flows and the Basic Auth X-Gitea-OTP path.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
48
EG Risk 48/100

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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

Published

July 3, 2026

Last Modified

July 7, 2026

Advisory Details (4)

Auto-updated Jul 3, 2026
🔬 Proof of concept available. Patch available. Sources: github_pr, github_release, github.
githubMentions a patch (unverified)🟡 PoC Available

TOTP TOCTOU race on web 2FA paths + missing replay check on Basic-Auth `X-Gitea-OTP` surface · Advisory · go-gitea/gitea · GitHub

https://github.com/go-gitea/gitea/security/advisories/GHSA-gx3v-q759-g323
github_release Patch Available

v1.26.3

Patch available: go-gitea/gitea v1.26.3

https://github.com/go-gitea/gitea/releases/tag/v1.26.3
github_pr

fix: Various security fixes (#38103)

Fix merged in go-gitea/gitea PR #38151 on 2026-06-17 — awaiting tagged release

https://github.com/go-gitea/gitea/pull/38151
generic

Gitea 1.26.3 and 1.26.4 are released | Gitea Blog

https://blog.gitea.com/release-of-1.26.3-and-1.26.4/

Vendor Advisories for CVE-2026-20779(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
code.gitea.io/gitea—
  • 1.5.0 up to 1.26.3: fixed in 1.26.3
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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.

Showing the most recent 100 of 138 total refreshes for this CVE.

  1. 2026-10-09 20:06 UTCEPSS rescore
  2. 2026-10-08 17:11 UTCEPSS rescore
  3. 2026-10-07 23:47 UTCEPSS rescore
  4. 2026-10-06 15:17 UTCEPSS rescore
  5. 2026-10-05 17:42 UTCEPSS rescore
  6. 2026-10-04 23:21 UTCEPSS rescore
  7. 2026-10-01 19:49 UTCEPSS rescore
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-29 15:21 UTCEPSS rescore
  10. 2026-09-28 13:51 UTCEPSS rescore
  11. 2026-09-27 13:47 UTCEPSS rescore
  12. 2026-09-26 15:58 UTCEPSS rescore
  13. 2026-09-26 00:26 UTCEPSS rescore
  14. 2026-09-24 14:03 UTCEPSS rescore
  15. 2026-09-23 06:34 UTCEG score recompute
  16. 2026-09-18 19:27 UTCEPSS rescore
  17. 2026-09-18 06:11 UTCEG score recompute
  18. 2026-09-16 14:07 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-14 00:02 UTCEG score recompute
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-13 08:55 UTCEG score recompute
  23. 2026-09-12 15:01 UTCEPSS rescore
  24. 2026-09-12 14:01 UTCEG score recompute
  25. 2026-09-11 14:52 UTCEPSS rescore
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  1. 2026-09-10 09:34 UTCEPSS rescore
  2. 2026-09-08 22:00 UTCEPSS rescore
  3. 2026-09-07 16:01 UTCEPSS rescore
  4. 2026-09-06 14:17 UTCEG score recompute
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-05 23:41 UTCEG score recompute
  8. 2026-09-04 05:06 UTCEPSS rescore
  9. 2026-09-02 14:11 UTCEPSS rescore
  10. 2026-09-01 13:53 UTCEPSS rescore
  11. 2026-09-01 04:39 UTCEPSS rescore
  12. 2026-08-30 23:27 UTCEG score recompute
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 11:18 UTCEG score recompute
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 22:12 UTCEG score recompute
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-27 02:59 UTCEG score recompute
  20. 2026-08-26 14:46 UTCEPSS rescore
  21. 2026-08-26 14:32 UTCEG score recompute
  22. 2026-08-25 13:48 UTCEPSS rescore
  23. 2026-08-24 20:52 UTCEG score recompute
  24. 2026-08-23 07:06 UTCEG score recompute
  25. 2026-08-23 00:19 UTCEPSS rescore
  26. 2026-08-22 05:54 UTCEG score recompute
  27. 2026-08-21 23:49 UTCEPSS rescore
  28. 2026-08-21 04:25 UTCEG score recompute
  29. 2026-08-20 22:55 UTCEPSS rescore
  30. 2026-08-20 03:42 UTCEG score recompute
  31. 2026-08-19 17:03 UTCEPSS rescore
  32. 2026-08-18 23:47 UTCEG score recompute
  33. 2026-08-18 13:48 UTCEPSS rescore
  34. 2026-08-17 22:47 UTCEG score recompute
  35. 2026-08-17 13:47 UTCEPSS rescore
  36. 2026-08-16 18:04 UTCEG score recompute
  37. 2026-08-16 14:56 UTCEPSS rescore
  38. 2026-08-16 05:30 UTCEG score recompute
  39. 2026-08-16 02:14 UTCEPSS rescore
  40. 2026-08-15 05:28 UTCEG score recompute
  41. 2026-08-15 01:30 UTCEPSS rescore
  42. 2026-08-14 05:13 UTCEG score recompute
  43. 2026-08-13 22:00 UTCEPSS rescore
  44. 2026-08-12 17:00 UTCEG score recompute
  45. 2026-08-12 13:50 UTCEPSS rescore
  46. 2026-08-11 16:58 UTCEG score recompute
  47. 2026-08-11 13:42 UTCEPSS rescore
  48. 2026-08-11 04:57 UTCEG score recompute
  49. 2026-08-11 00:00 UTCEPSS rescore
  50. 2026-08-09 16:12 UTCEG score recompute
  51. 2026-08-09 13:46 UTCEPSS rescore
  52. 2026-08-09 04:12 UTCEG score recompute
  53. 2026-08-08 16:37 UTCEPSS rescore
  54. 2026-08-08 04:10 UTCEG score recompute
  55. 2026-08-06 16:07 UTCEG score recompute
  56. 2026-08-06 13:46 UTCEPSS rescore
  57. 2026-08-06 04:06 UTCEG score recompute
  58. 2026-08-05 19:17 UTCEPSS rescore
  59. 2026-08-05 02:25 UTCEG score recompute
  60. 2026-08-04 15:10 UTCEPSS rescore
  61. 2026-08-04 14:17 UTCEG score recompute
  62. 2026-08-04 10:38 UTCEPSS rescore
  63. 2026-08-03 14:06 UTCEG score recompute
  64. 2026-08-03 10:35 UTCEPSS rescore
  65. 2026-08-01 14:01 UTCEG score recompute
  66. 2026-08-01 04:15 UTCEPSS rescore
  67. 2026-07-31 01:19 UTCEG score recompute
  68. 2026-07-30 13:18 UTCEG score recompute
  69. 2026-07-30 01:30 UTCEPSS rescore
  70. 2026-07-29 01:13 UTCEG score recompute
  71. 2026-07-28 01:06 UTCEG score recompute
  72. 2026-07-27 14:13 UTCEPSS rescore
  73. 2026-07-27 00:58 UTCEG score recompute
  74. 2026-07-26 14:54 UTCEPSS rescore
  75. 2026-07-26 14:54 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-20779?
CVE-2026-20779 is a high vulnerability published on July 3, 2026. Gitea versions from 1.5.0 before 1.26.3 have a TOTP single-use enforcement defect that allows a valid TOTP code to be accepted more than once across web two-factor authentication flows and the Basic Auth X-Gitea-OTP path.
When was CVE-2026-20779 disclosed?
CVE-2026-20779 was first published on July 3, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20779 actively exploited?
CVE-2026-20779 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-20779?
CVE-2026-20779 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-20779?
A fix for CVE-2026-20779 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-20779 are linked in the Vendor Advisories panel on this page.

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