CVE-2026-82556 (GCVE-0-2026-82556)
Vulnerability from cvelistv5 – Published: 2026-08-30 17:45 – Updated: 2026-08-31 18:36
VLAI
EPSS
VEX
Title
Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forgery
Summary
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."
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:36 UTC
CWE
- CWE-918 - Server-Side Request Forgery
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397072 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/397072/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82556 | third-party-advisory |
| https://vuldb.com/submit/891889 | third-party-advisory |
| https://codeberg.org/forgejo/forgejo/issues/13433 | broken-linkexploitissue-tracking |
| https://codeberg.org/forgejo/forgejo/pulls/13490 | broken-link |
| https://codeberg.org/forgejo/forgejo/commit/b313b… | patch |
Impacted products
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}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.