CVE-2025-31479Network attack vector

Partial token disclosure via exception-local rendering

Published Apr 2, 2025 · Updated Apr 3, 2025

Sensitive-information exposure in Canonical get-workflow-version-action 1.0.0 allows attackers to read a partial GITHUB_TOKEN in job logs. The Typer exception formatter includes local variables in a failed step's traceback, so a truncated GH_TOKEN value bypasses full-secret redaction. The github-token input and a step failure are required; repository-log readers can use the token only before job completion, with effects limited by its permissions.

CVSS severity8.2
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Sensitive-information exposure in Canonical get-workflow-version-action 1.0.0 allows attackers to read a partial GITHUB_TOKEN in job logs. The Typer exception formatter includes local variables in a failed step's traceback, so a truncated GH_TOKEN value bypasses full-secret redaction. The github-token input and a step failure are required; repository-log readers can use the token only before job completion, with effects limited by its permissions.

The record

CVE
CVE-2025-31479
Published
Apr 2, 2025
Updated
Apr 3, 2025
Vendor
Canonical
Product
get-workflow-version-action
Classifications
CWE-532, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Canonical · get-workflow-version-actionversion=< 1.0.1

Published CVSS scores

8.2GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo