Octo Sts App vulnerabilities
2 vulnerabilities
Known vulnerabilities in Octo Sts App, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
RoutineCVE-2026-105770octo-sts · appOcto STS discloses trust policy contents to unauthorized callers via Exchange error messagesOcto STS (github.com/octo-sts/app) before 0.11.2 returns trust policy configuration to callers whose OIDC token does not satisfy that policy. TrustPolicy.CheckToken included the policy's issuer, subject and audience values or patterns and claim_pattern names and regular expressions in its PermissionDenied errors, which Exchange returned verbatim. Exchange also selected the GitHub App installation before checking the token, so errors from resolving the policy's app or app_pattern pin were returned to callers the policy does not trust. An attacker who holds any validly signed OIDC token, such as a GitHub Actions token from a repository they own, and who knows or guesses a target owner/repo and identity name can read that policy's matching rules, even when the policy is stored in a private repository. These rules often name internal repositories, branches, environments or cloud account identifiers. The issue does not allow minting tokens or bypassing a trust policy. This issue is fixed in 0.11.2.CVSS5.3MediumEPSS0.26%PrioritiseCVE-2025-52477octo-sts · app +5 moreOcto-STS Vulnerable to Unauthenticated SSRF with HTTP Response Reflection in OIDC FlowOcto-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.CVSS8.6HighEPSS0.49%RoutineCVE-2024-34079octo-sts · app +5 moreocto-sts allows unauthenticated attackers to cause unbounded CPU and memory usageocto-sts is a GitHub App that acts like a Security Token Service (STS) for the Github API. This vulnerability can spike the resource utilization of the STS service, and combined with a significant traffic volume could potentially lead to a denial of service. This vulnerability is fixed in 0.1.0CVSS3.7LowEPSS0.58%