CVE-2026-20883Network attack vectorHinoki check available

Post-revocation disclosure via stale stopwatch authorization

Published Jan 22, 2026 · Updated Jan 22, 2026

Improper access control in Gitea 1.25.3 and earlier allows remote authenticated users to read private issue titles and repository names. The stopwatch API's ToStopWatches conversion returned stored entries without passing the requesting user through a current repository permission check. The user must have started a stopwatch while authorized and retain account access after repository permission is revoked; exposure is limited to the associated issue title and repository name.

CVSS severity6.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper access control in Gitea 1.25.3 and earlier allows remote authenticated users to read private issue titles and repository names. The stopwatch API's ToStopWatches conversion returned stored entries without passing the requesting user through a current repository permission check. The user must have started a stopwatch while authorized and retain account access after repository permission is revoked; exposure is limited to the associated issue title and repository name.

The record

CVE
CVE-2026-20883
Published
Jan 22, 2026
Updated
Jan 22, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-284, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.25.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gitea · Giteaversion=0 <=1.25.3

Published CVSS scores

2.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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