CVE-2026-105268 (GCVE-0-2026-105268)

Vulnerability from cvelistv5 – Published: 2026-10-06 21:35 – Updated: 2026-10-07 16:12
VLAI
Title
Gitea issue attachment API allows changing comment attachments
Summary
The Gitea API routes for issue attachments (`/api/v1/repos/{owner}/{repo}/issues/{index}/assets/{attachment_id}`) also accepted attachments that belong to comments on the issue. Because the author of an issue may edit and delete the issue's attachments, a user who opened an issue could rename or delete attachments that other users had posted in comments on that issue. The contents of the attachments could not be changed.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 16:09 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
Gitea Gitea Affected: 0 , ≤ 28.0.0 (semver)
guessed Create a notification for this product.
Credits
https://github.com/N0K0 https://github.com/silverwind https://github.com/bircni
Show details on NVD website
To clipboard 

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          "value": "https://github.com/silverwind"
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          "type": "remediation developer",
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          "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-96qg-qxxj-r8xq"
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        {
          "name": "Gitea 28.1.0 release announcement",
          "tags": [
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          "url": "https://blog.gitea.com/release-of-28.1.0/"
        },
        {
          "name": "go-gitea/gitea v28.1.0 release",
          "tags": [
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          "url": "https://github.com/go-gitea/gitea/releases/tag/v28.1.0"
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      "title": "Gitea issue attachment API allows changing comment attachments"
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    "dateReserved": "2026-10-04T22:02:04.877Z",
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          }
        ],
        "id": "CVE-2026-105268",
        "lastModified": "2026-10-07T17:16:46.643",
        "metrics": {
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      "cve": "CVE-2026-105268",
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      "initial_release_date": "2026-10-06T21:35:40.926000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "code.gitea.io/gitea: Gitea: Unauthorized deletion and renaming of comment attachments via issue attachment API",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105268.json",
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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

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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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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