How severe is CVE-2025-64494?

CVE-2025-64494 has a CVSS score of 4.6/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2025-64494?

CVE-2025-64494 affects the following packages: github.com/charmbracelet/soft-serve (Go). Ecosystems affected: Go.

How do I fix CVE-2025-64494?

Update github.com/charmbracelet/soft-serve to 0.11.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-64494 is resolved across your whole dependency graph.

How do I detect CVE-2025-64494 in my Go dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/charmbracelet/soft-serve, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-64494 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2025-64494 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-64494 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-64494?

CVE-2025-64494 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 9th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-64494?

CVE-2025-64494 is classified as CWE-150 (CWE-150). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2025-64494 published, and has it been updated?

CVE-2025-64494 was published on November 8, 2025 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐹

🐹 Go

Not in CISA KEV

MEDIUM severity

CVE-2025-64494 — soft-serve

MEDIUMFix: charmbracelet/soft-serve@d963932

CVE-2025-64494 is a medium-severity (CVSS 4.6) CWE-150 vulnerability in github.com/charmbracelet/soft-serve. A fix is available for github.com/charmbracelet/soft-serve — see the affected versions and patch details below.

Soft Serve does not sanitize ANSI escape sequences in user input

Also known asGHSA-fv2r-r8mp-pg48GO-2025-4106

Published

Nov 8, 2025

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-64494.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs9th percentile — riskier than 9% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

🐹github.com/charmbracelet/soft-serve

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Impact

In several places where the user can insert data (e.g. names), ANSI escape sequences are not being removed, which can then be used, for example, to show fake alerts.

In the same token, git messages, when printed, are also not being sanitized.

Places in which this was found:

Repository Description (pkg/backend/repo.go - SetDescription)
Repository Project Name (pkg/backend/repo.go - SetProjectName)
Git Commit Author Names (pkg/ssh/cmd/commit.go:69)
Git Commit Messages (pkg/ssh/cmd/commit.go:71)
Access Token Names (pkg/ssh/cmd/token.go:107)
Webhook URLs (pkg/ssh/cmd/webhooks.go:72)

Patches

v0.11.0

Workarounds

No.

References

n/a

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`github.com/charmbracelet/soft-serve`	all versions	0.11.0`go get github.com/charmbracelet/soft-serve@v0.11.0`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/charmbracelet/soft-serve, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/charmbracelet/soft-serve to 0.11.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-64494 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact In several places where the user can insert data (e.g. names), ANSI escape sequences are not being removed, which can then be used, for example, to show fake alerts. In the same token, git messages, when printed, are also not being sanitized. Places in which this was found: 1. Repository Description (pkg/backend/repo.go - SetDescription) 2. Repository Project Name (pkg/backend/repo.go - SetProjectName) 3. Git Commit Author Names (pkg/ssh/cmd/commit.go:69) 4. Git Commit Messages (pkg/ssh/cmd/commit.go:71) 5. Access Token Names (pkg/ssh/cmd/token.go:107) 6. Webhook URLs (pkg/ssh/cm