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CVE-2026-50105

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

4.3 MediumFix available

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.36%Up 0.2 points since Aug 14, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.3

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Record
CVE-2026-50105
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200, CWE-862
Updated
2026-11-02
EUVDEUVD-2026-58136 4.3

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Record
EUVD-2026-58136
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-6cqf-375w-639g 4.3

Gitea: RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Summary

Gitea's RSS/Atom feed handlers accept API-token Basic auth but perform no token-scope or public-only enforcement. A personal access token that is correctly blocked (HTTP 403) from a private repository on /raw, /media, /archive, and /releases/download/... — because it is marked public-only or lacks the repository scope category — still returns that repository's private content through the feed routes. This is a token-confinement bypass and appears to be an incomplete fix of #37698, which added that scope enforcement to the download handlers but not to the sibling feed handlers.

This is not a cross-user access bug: the requesting account must still legitimately have repo read access (RepoAssignment + reqUnitCodeReader are enforced). What is bypassed is the guarantee that a confined token cannot reach private content — which is exactly the property #37698 was shipped to provide for downloads, and which matters when such a token is handed to a third-party service/CI, leaked, or used in a lower-trust integration.

Details

#37698 added context.CheckTokenScopes / CheckRepoScopedToken (services/context/permission.go) to the raw / media / archive / attachment download handlers, so a public-only or wrong-scope-category token cannot read private-repo content even when the owning user otherwise has access.

The feed handlers are registered with webAuth.AllowBasic (so they accept token Basic auth) but call no scope / public-only check. A grep for CheckTokenScopes / CheckRepoScopedToken / IsApiToken across routers/web/feed/ and the release feed handlers returns nothing.

Affected routes (all token-reachable via webAuth.AllowBasic, none call the scope check):

| Route | Handler | Private data exposed | |---|---|---| | GET /{owner}/{repo}.rss / .atom | repo.Home → handleRepoHomeFeed (view_home.go) | last-10 commits: SHA, full message, author name + email | | GET /{owner}/{repo}/rss/branch/*, /atom/branch/* | feed.RenderBranchFeed* → ShowBranchFeed (routers/web/feed/branch.go) | same commit data, any branch | | GET /{owner}/{repo}/releases.rss / .atom | ReleasesFeedRSS/Atom (routers/web/repo/release.go) → ShowReleaseFeed | private release names, notes, descriptions | | GET /{owner}/{repo}/tags.rss / .atom | TagsListFeedRSS/Atom → ShowReleaseFeed | private tag names + messages | | GET /{user}.rss / .atom | showUserFeed (routers/web/feed/profile.go), includePrivate = self \|\| admin | the token owner's private cross-repo activity stream |

Inconsistency that pins this down: the branch-feed routes sit in the same route group as /raw, /media, /archive (all of which call checkDownloadTokenScope), and releases.rss sits next to /releases/attachments/{uuid} and /releases/download/... (both go through ServeAttachment → scope check). Only the feeds were missed. The API equivalents (ListReleases / ListTags) are scope-gated via tokenRequiresScopes.

Two distinct confinement bypasses:

  1. Public-only bypass. A token created with the public-only option is blocked (403) from a private repo on /raw, /archive, /releases/download/..., but returns private commit / release data via .../releases.rss, .../rss/branch/*, /{owner}/{repo}.rss, and the owner's private activity via /{user}.rss.
  2. Scope-category bypass. A token scoped to only e.g. read:issue (no read:repository) is rejected by the download handlers but reads repository commit/release content via the feeds.

PoC

Verified live against the official gitea/gitea:1.26.2 Docker image (sqlite, feeds enabled).

Setup: non-admin user alice; private repo alice/secret with a commit "SECRET-COMMIT-MARKER ..." (file secret.txt) and a release "Private Release" / body "SECRET-RELEASE-MARKER ...". Two confined personal access tokens, both sent via HTTP Basic so the auth method is identical across download and…

Record
GHSA-6cqf-375w-639g
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200, CWE-862
Updated
2026-11-02
NVD 4.3

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Record
CVE-2026-50105
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200, CWE-862
Updated
2026-11-02
OSV 4.3

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Record
CVE-2026-50105
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200, CWE-862
Updated
2026-11-02
OSVGHSA-6cqf-375w-639g 4.3

Gitea: RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

Summary

Gitea's RSS/Atom feed handlers accept API-token Basic auth but perform no token-scope or public-only enforcement. A personal access token that is correctly blocked (HTTP 403) from a private repository on /raw, /media, /archive, and /releases/download/... — because it is marked public-only or lacks the repository scope category — still returns that repository's private content through the feed routes. This is a token-confinement bypass and appears to be an incomplete fix of #37698, which added that scope enforcement to the download handlers but not to the sibling feed handlers.

This is not a cross-user access bug: the requesting account must still legitimately have repo read access (RepoAssignment + reqUnitCodeReader are enforced). What is bypassed is the guarantee that a confined token cannot reach private content — which is exactly the property #37698 was shipped to provide for downloads, and which matters when such a token is handed to a third-party service/CI, leaked, or used in a lower-trust integration.

Details

#37698 added context.CheckTokenScopes / CheckRepoScopedToken (services/context/permission.go) to the raw / media / archive / attachment download handlers, so a public-only or wrong-scope-category token cannot read private-repo content even when the owning user otherwise has access.

The feed handlers are registered with webAuth.AllowBasic (so they accept token Basic auth) but call no scope / public-only check. A grep for CheckTokenScopes / CheckRepoScopedToken / IsApiToken across routers/web/feed/ and the release feed handlers returns nothing.

Affected routes (all token-reachable via webAuth.AllowBasic, none call the scope check):

| Route | Handler | Private data exposed | |---|---|---| | GET /{owner}/{repo}.rss / .atom | repo.Home → handleRepoHomeFeed (view_home.go) | last-10 commits: SHA, full message, author name + email | | GET /{owner}/{repo}/rss/branch/*, /atom/branch/* | feed.RenderBranchFeed* → ShowBranchFeed (routers/web/feed/branch.go) | same commit data, any branch | | GET /{owner}/{repo}/releases.rss / .atom | ReleasesFeedRSS/Atom (routers/web/repo/release.go) → ShowReleaseFeed | private release names, notes, descriptions | | GET /{owner}/{repo}/tags.rss / .atom | TagsListFeedRSS/Atom → ShowReleaseFeed | private tag names + messages | | GET /{user}.rss / .atom | showUserFeed (routers/web/feed/profile.go), includePrivate = self \|\| admin | the token owner's private cross-repo activity stream |

Inconsistency that pins this down: the branch-feed routes sit in the same route group as /raw, /media, /archive (all of which call checkDownloadTokenScope), and releases.rss sits next to /releases/attachments/{uuid} and /releases/download/... (both go through ServeAttachment → scope check). Only the feeds were missed. The API equivalents (ListReleases / ListTags) are scope-gated via tokenRequiresScopes.

Two distinct confinement bypasses:

  1. Public-only bypass. A token created with the public-only option is blocked (403) from a private repo on /raw, /archive, /releases/download/..., but returns private commit / release data via .../releases.rss, .../rss/branch/*, /{owner}/{repo}.rss, and the owner's private activity via /{user}.rss.
  2. Scope-category bypass. A token scoped to only e.g. read:issue (no read:repository) is rejected by the download handlers but reads repository commit/release content via the feeds.

PoC

Verified live against the official gitea/gitea:1.26.2 Docker image (sqlite, feeds enabled).

Setup: non-admin user alice; private repo alice/secret with a commit "SECRET-COMMIT-MARKER ..." (file secret.txt) and a release "Private Release" / body "SECRET-RELEASE-MARKER ...". Two confined personal access tokens, both sent via HTTP Basic so the auth method is identical across download and…

Record
GHSA-6cqf-375w-639g
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200, CWE-862
Updated
2026-11-02
OSVGO-2026-6036 No score

Gitea: RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698) in gitea.dev

Gitea: RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698) in gitea.dev

Record
GO-2026-6036
Updated
2026-11-02
OSVopenSUSE-SU-2026:21483-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
  • GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
  • GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
  • GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
  • GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
  • GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
  • GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
  • GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
  • GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
  • GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
  • GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
  • GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
  • GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
  • GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
  • GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
  • GO-2026-5933 GHSA-3g4q-2f67-2gvh
  • GO-2026-5934 GHSA-59qp-cfj3-rp64
  • GO-2026-5935 GHSA-7856-g3gv-9wq8
  • GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
  • GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
  • GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
  • GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
  • GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
  • GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
  • GO-2026-5942 CVE-2026-46600
  • GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
  • GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
  • GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
  • GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
  • GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
  • GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
  • GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
  • GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
  • GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
  • GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
  • GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
  • GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
  • GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
  • GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
  • GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
  • GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
  • GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
  • GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
  • GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
  • GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
  • GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
  • GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
  • GO-2026-5969 GHSA-g936-7jqj-mwv8
  • GO-2026-5970 CVE-2026-56852
  • GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
  • GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
  • GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
  • GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
  • GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
  • GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
  • GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
  • GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
  • GO-2026-5981 GHSA-mqxv-9rm6-w8qc
  • GO-2026-5982 GHSA-pqg7-v6wh-3pfp
  • GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
  • GO-2026-5985 GHSA-7rx3-5wx3-5v76
  • GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
  • GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
  • GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
  • GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
  • GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
  • GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
  • GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
  • GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
  • GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
  • GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
  • GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
  • GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
  • GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
  • GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
  • GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
  • GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…
Record
openSUSE-SU-2026:21483-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
code.gitea.io/gitea
Go
 before 1.27.0
1.27.0
gitea.dev
Go
 before 1.27.0
1.27.0
govulncheck-vulndb
openSUSE:Leap 16.0
 before 0.0.20260723T184607-160000.1.1
0.0.20260723T184607-160000.1.1

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-50105 is a medium vulnerability (CVSS 4.3) in Gitea Open Source Git Server, published July 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. Fixed in code.gitea.io/gitea 1.27.0.

References

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