CVE-2026-82556

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-08-30. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability was found in Forgejo up to 15.0.4. This issue affects the function net.LookupIP of the file services/migrations/allowlist/is_migrate_allowed.go of the component Repository Migration Handler. Performing a manipulation results in server-side request forgery. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named b313bb83f5ff22bcc0378e0e0ca7bbd58303f168. It is recommended to apply a patch to fix this issue. The project maintainer explains: "I don't intend to backport this to v15 or v16 as it is a breaking change."

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

August 30, 2026

Last Modified

August 31, 2026

Advisory Details (3)

Auto-updated Aug 30, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Cookie monster!

https://codeberg.org/forgejo/forgejo/commit/b313bb83f5ff22bcc0378e0e0ca7bbd58303f168
generic

#13490 - fix: prevent mirroring & migrations on unencrypted URL schemes (`http://`, `git://`) - forgejo/forgejo - Codeberg.org

https://codeberg.org/forgejo/forgejo/pulls/13490
generic🟡 PoC Available

#13433 - problem: time-of-check vs. time-of-use SSRF protection mismatch in git fetch & push migrations - forgejo/forgejo - Codeberg.org

https://codeberg.org/forgejo/forgejo/issues/13433

Vendor Advisories for CVE-2026-82556(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 65× 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. 2026-09-21 01:51 UTCEG score recompute
  2. 2026-09-21 01:51 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 00:23 UTCEG score recompute
  5. 2026-09-20 00:23 UTCGHSA enrichment
  6. 2026-09-18 22:55 UTCEG score recompute
  7. 2026-09-18 22:55 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 21:28 UTCEG score recompute
  10. 2026-09-17 21:28 UTCGHSA enrichment
  11. 2026-09-16 20:00 UTCEG score recompute
  12. 2026-09-16 20:00 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 18:27 UTCEG score recompute
  16. 2026-09-15 18:27 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 16:23 UTCEG score recompute
  20. 2026-09-14 16:23 UTCGHSA enrichment
  21. 2026-09-13 14:55 UTCEG score recompute
  22. 2026-09-13 14:55 UTCGHSA enrichment
  23. 2026-09-12 13:15 UTCEG score recompute
  24. 2026-09-12 13:15 UTCGHSA enrichment
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 40 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 11:47 UTCEG score recompute
  3. 2026-09-11 11:47 UTCGHSA enrichment
  4. 2026-09-10 10:17 UTCEG score recompute
  5. 2026-09-10 10:17 UTCGHSA enrichment
  6. 2026-09-09 08:50 UTCEG score recompute
  7. 2026-09-09 08:50 UTCGHSA enrichment
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-08 07:22 UTCEG score recompute
  10. 2026-09-08 07:22 UTCGHSA enrichment
  11. 2026-09-07 05:54 UTCEG score recompute
  12. 2026-09-07 05:54 UTCGHSA enrichment
  13. 2026-09-06 13:48 UTCEPSS rescore
  14. 2026-09-06 04:27 UTCEG score recompute
  15. 2026-09-06 04:27 UTCGHSA enrichment
  16. 2026-09-05 15:31 UTCEPSS rescore
  17. 2026-09-05 03:00 UTCEG score recompute
  18. 2026-09-05 03:00 UTCGHSA enrichment
  19. 2026-09-04 05:07 UTCEPSS rescore
  20. 2026-09-04 01:32 UTCGHSA enrichment
  21. 2026-09-03 00:02 UTCEG score recompute
  22. 2026-09-03 00:02 UTCGHSA enrichment
  23. 2026-09-02 14:12 UTCEPSS rescore
  24. 2026-09-01 22:35 UTCEG score recompute
  25. 2026-09-01 22:35 UTCGHSA enrichment
  26. 2026-09-01 13:54 UTCEPSS rescore
  27. 2026-09-01 04:40 UTCEPSS rescore
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-08-31 21:08 UTCEG score recompute
  30. 2026-08-31 21:08 UTCGHSA enrichment
  31. 2026-08-31 19:28 UTCEG score recompute
  32. 2026-08-31 19:28 UTCGHSA enrichment
  33. 2026-08-31 19:21 UTCNVD updateCVSS v4 → 2.1
  34. 2026-08-31 18:49 UTCEG score recompute
  35. 2026-08-31 18:49 UTCGHSA enrichment
  36. 2026-08-31 18:44 UTCMITRE cvelistV5CVSS v4 → 5.3
  37. 2026-08-30 18:27 UTCEG score recompute
  38. 2026-08-30 18:27 UTCNVD updateCVSS v4 → 2.1
  39. 2026-08-30 17:51 UTCEG score recompute
  40. 2026-08-30 17:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82556?
CVE-2026-82556 is a medium vulnerability published on August 30, 2026. A vulnerability was found in Forgejo up to 15.0.4. This issue affects the function net.LookupIP of the file services/migrations/allowlist/ismigrateallowed.go of the component Repository Migration Handler. Performing a manipulation results in server-side request forgery. The attack can be initiated…
When was CVE-2026-82556 disclosed?
CVE-2026-82556 was first published in the National Vulnerability Database on August 30, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82556 actively exploited?
CVE-2026-82556 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.0% of all scored CVEs.
What is the CVSS score of CVE-2026-82556?
CVE-2026-82556 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-82556?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82556, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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