Cyber Resilience

CVE-2026-52809

Published
24 June 2026
Modified
26 June 2026
CVSS Score v3.1 6.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS Score 0.0015 5th percentile
Risk Priority 49 floored blend · peak EPSS

Summary

CVE-2026-52809 is a medium-severity Use of a Key Past its Expiration Date (CWE-324) vulnerability. Its CVSS base score is 6.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Brute Force (T1110); ranked at the 5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-12 (Session Termination) and IA-5 (Authenticator Management) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A04:2025 Cryptographic FailuresA07:2025 Authentication Failures

EU & UK References

No EU or UK CSIRT advisories indexed for this CVE.

Vulnerability Data

Gogs is an open source self-hosted Git service. Prior to 0.14.3, password-reset tokens are generated using conf.Auth.ActivateCodeLives (the account-activation lifetime), not conf.Auth.ResetPasswordCodeLives. The token lifetime is baked into the token itself at generation time and is re-extracted from the token…

more

at verification time, making RESET_PASSWORD_CODE_LIVES irrelevant to actual enforcement. When an administrator configures a shorter reset window (e.g., 10 minutes) for compliance or security reasons, reset tokens remain exploitable for the full activation lifetime instead, while the reset email falsely advertises the shorter expiry. This vulnerability is fixed in 0.14.3.

CWE(s)
CWE-324CWE-613

Related Threats

MITRE ATT&CK Enterprise Techniques

T1110 Brute Force Credential Access
Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.
attack.mitre.org →
T1110.002 Password Cracking Credential Access
Adversaries may use password cracking to attempt to recover usable credentials, such as plaintext passwords, when credential material such as password hashes are obtained.
attack.mitre.org →
T1185 Browser Session Hijacking Collection
Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.
attack.mitre.org →
T1550 Use Alternate Authentication Material Lateral Movement
Adversaries may use alternate authentication material, such as password hashes, Kerberos tickets, and application access tokens, in order to move laterally within an environment and bypass normal system access controls.
attack.mitre.org →
T1550.004 Web Session Cookie Lateral Movement
Adversaries can use stolen session cookies to authenticate to web applications and services.
attack.mitre.org →
T1563 Remote Service Session Hijacking Lateral Movement
Adversaries may take control of preexisting sessions with remote services to move laterally in an environment.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-46344Shared CWE-613
CVE-2025-53896Shared CWE-613
CVE-2023-5889Shared CWE-613
CVE-2025-24896Shared CWE-613
CVE-2026-27647Shared CWE-613
CVE-2026-26342Shared CWE-613
CVE-2024-29070Shared CWE-613
CVE-2026-40934Shared CWE-613
CVE-2026-39924Shared CWE-613
CVE-2024-27779Shared CWE-613

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

AC-12 Session Termination good match

AC-12 directly requires automatic session termination after a defined period, structurally preventing reuse of expired session identifiers.

SC-12 Cryptographic Key Establishment and Management good match

SC-12 requires establishing and managing cryptographic keys including distribution, storage, access and destruction, which directly enforces expiration and rotation policies.

IA-5 Authenticator Management good match

IA-5 requires managing authenticators (including passwords and tokens) with verification, distribution and revocation steps that cover expiration enforcement.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-01 mostly match
prevents

Credential lifecycle management directly includes enforcing session expiration to prevent reuse.

PR.AA-05 mostly match
prevents

Authorization policy enforcement and review covers terminating stale sessions to limit access scope.

ID.AM-08 partial match
prevents

Lifecycle management of cryptographic assets directly includes enforcing key expiration and rotation.

PR.AA-03 partial match
prevents

Authentication mechanisms can incorporate session timeout checks but do not inherently address expiration policy.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.24 Use of cryptography mostly match
prevents

Use-of-cryptography control explicitly covers key lifecycle management including expiration and rotation.

A.5.17 Authentication information partial match
prevents

Authentication information policy should mandate key rotation and expiry, directly preventing use of expired keys.

A.8.32 Change management partial match
mitigates

Change-management processes can trigger key rotation, but do not inherently enforce cryptographic expiry rules.

A.8.5 Secure authentication partial match
degrades

Secure authentication requires cryptographic keys to be replaced before expiry, mitigating the weakness.

References