CVE-2026-34966

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. A secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-53617 (ENISA EUVD) · GHSA-685p-fm6j-c445 (GitHub Security Advisories)Source: ENISA EUVD

7.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Gitea prior to 1.27.0 contains a server-side request forgery vulnerability that allows authenticated attackers to bypass SSRF protections by exploiting HTTP fetch operations in migration and OAuth avatar code paths that use Go's default http.Get without a custom DialContext. Attackers can supply arbitrary URLs through release asset download URLs, pull-request patch URLs, or OAuth avatar endpoints to reach internal services, cloud instance-metadata endpoints, or read local files such as the application configuration containing database credentials and signing secrets, with exfiltrated content persisted as migration release assets for later retrieval.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
50
EG Risk 50/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity76% × 45%
Impact severity (EG Severity): CVSS 7.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.6): severity, escalated by confirmed exploitation. This CVE's 7.6 is its impact severity (EG Severity), not escalated.

EG Severity
7.6 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 5, 2026

Last Modified

October 8, 2026

Advisory Details (4)

Auto-updated Aug 5, 2026
Patch available. Sources: github, github_commit.
Web page

Gitea prior to 1.27.0 SSRF via Migration URI Fetch Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gitea-prior-to-ssrf-via-migration-uri-fetch-bypass
GitHub commit

commit b969123b7fac (go-gitea/gitea)

Fix landed in go-gitea/gitea commit b969123b7fac — awaiting tagged release

https://github.com/go-gitea/gitea/commit/b969123b7fac51c88daab5cb64e5b2f4abd53288
GitHub advisoryMentions a patch (unverified)

SSRF via Migration Asset Downloads Bypasses hostmatcher — Reads Internal Files and Cloud Metadata · Advisory · go-gitea/gitea · GitHub

https://github.com/go-gitea/gitea/security/advisories/GHSA-2wm4-vwp6-v7xc
Web page

GitHub - go-gitea/gitea: Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD · GitHub

https://github.com/go-gitea/gitea

Vendor Advisories for CVE-2026-34966(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
gitea.dev—
  • every version up to 1.27.0: fixed in 1.27.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 54× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 256 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 157 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-31 01:17 UTCEG score recompute
  5. 2026-10-31 01:17 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  6. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  8. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  10. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-10-25 14:33 UTCEG score recompute
  13. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  14. 2026-10-24 08:22 UTCEG score recompute
  15. 2026-10-24 08:22 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  16. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-10-18 03:45 UTCEG score recompute
  23. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-10-17 15:27 UTCEG score recompute
  25. 2026-10-17 15:26 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
Show 74 more
  1. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  3. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  4. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  6. 2026-10-12 16:12 UTCEG score recompute
  7. 2026-10-11 19:54 UTCEG score recompute
  8. 2026-10-11 17:07 UTCEG score recompute
  9. 2026-10-11 14:34 UTCEG score recompute
  10. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-08 16:38 UTCEG score recompute
  15. 2026-10-08 16:38 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  16. 2026-10-08 15:44 UTCEG score recompute
  17. 2026-10-08 15:44 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  18. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-10-06 23:36 UTCEG score recompute
  20. 2026-10-06 23:36 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  21. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-10-05 19:32 UTCEG score recompute
  23. 2026-10-05 19:32 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  24. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-10-04 23:29 UTCEG score recompute
  26. 2026-10-04 23:29 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  27. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  28. 2026-10-04 05:57 UTCEG score recompute
  29. 2026-10-04 05:57 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  30. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  31. 2026-10-03 01:07 UTCEG score recompute
  32. 2026-10-03 01:07 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  33. 2026-10-02 09:50 UTCEG score recompute
  34. 2026-10-02 09:50 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  35. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  36. 2026-10-01 13:58 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  37. 2026-10-01 02:14 UTCEG score recompute
  38. 2026-10-01 02:14 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  39. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  40. 2026-09-29 06:12 UTCEG score recompute
  41. 2026-09-29 06:12 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  42. 2026-09-28 05:22 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  43. 2026-09-27 17:38 UTCEG score recompute
  44. 2026-09-27 17:38 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  45. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  46. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  47. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  48. 2026-09-25 09:10 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  49. 2026-09-24 21:25 UTCEG score recompute
  50. 2026-09-24 21:25 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  51. 2026-09-24 01:53 UTCEG score recompute
  52. 2026-09-24 01:53 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  53. 2026-09-23 14:09 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  54. 2026-09-23 00:52 UTCEG score recompute
  55. 2026-09-23 00:52 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  56. 2026-09-22 13:08 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  57. 2026-09-22 01:23 UTCEG score recompute
  58. 2026-09-22 01:23 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  59. 2026-09-21 13:04 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  60. 2026-09-20 20:46 UTCEG score recompute
  61. 2026-09-20 20:46 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  62. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  63. 2026-09-20 05:22 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  64. 2026-09-19 17:38 UTCEG score recompute
  65. 2026-09-19 17:38 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  66. 2026-09-19 03:20 UTCEG score recompute
  67. 2026-09-19 03:20 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  68. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  69. 2026-09-18 15:18 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  70. 2026-09-18 03:34 UTCEG score recompute
  71. 2026-09-18 03:34 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  72. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  73. 2026-09-17 15:49 UTCGHSA enrichmentGHSA-685p-fm6j-c445 · GitHub severity HIGH · GitHub CVSS 7.6
  74. 2026-09-17 01:04 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-34966?
CVE-2026-34966 is a high-severity vulnerability; its CVE record was published on August 5, 2026. Gitea prior to 1.27.0 contains a server-side request forgery vulnerability that allows authenticated attackers to bypass SSRF protections by exploiting HTTP fetch operations in migration and OAuth avatar code paths that use Go's default http.Get without a custom DialContext. Attackers can supply…
When was CVE-2026-34966 made public?
CVE-2026-34966 was made public on August 5, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 5, 2026. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-34966 actively exploited?
CVE-2026-34966 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34966?
CVE-2026-34966 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-34966?
A fix for CVE-2026-34966 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-34966 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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