CVE-2025-52477

HIGH

octo-sts/app < 0.5.3 - Unauthenticated Server-Side Request Forgery via OpenID Connect Token Fields

Title source: llm
STIX 2.1

Description

Octo-STS is a GitHub App that acts like a Security Token Service (STS) for the GitHub API. Octo-STS versions before v0.5.3 are vulnerable to unauthenticated SSRF by abusing fields in OpenID Connect tokens. Malicious tokens were shown to trigger internal network requests which could reflect error logs with sensitive information. Upgrade to v0.5.3 to resolve this issue. This version includes patch sets to sanitize input and redact logging.

References (3)

Core 3

Scores

CVSS v3 8.6
EPSS 0.0041
EPSS Percentile 32.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (2)
octo-sts/app 0 - 0.5.3Go
octo-sts/app < 0.5.3
Published Jun 26, 2025
Tracked Since Feb 18, 2026