How severe is GHSA-f57v-q966-7fh6?

No CVSS score has been assigned to GHSA-f57v-q966-7fh6 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-f57v-q966-7fh6?

GHSA-f57v-q966-7fh6 affects the following packages: monolog/monolog (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-f57v-q966-7fh6?

Update monolog/monolog to 1.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f57v-q966-7fh6 is resolved across your whole dependency graph.

How do I detect GHSA-f57v-q966-7fh6 in my Packagist dependencies?

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

How do I mitigate GHSA-f57v-q966-7fh6 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 GHSA-f57v-q966-7fh6 actively exploited in the wild?

No public exploit code has been indexed for GHSA-f57v-q966-7fh6 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.

When was GHSA-f57v-q966-7fh6 published, and has it been updated?

GHSA-f57v-q966-7fh6 was published on May 15, 2024 and was last updated on November 29, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

Monolog Header injection in NativeMailerHandlerGHSA-f57v-q966-7fh6

Fix: Seldaek/monolog#448

GHSA-f57v-q966-7fh6 is a security vulnerability in monolog/monolog. A fix is available for monolog/monolog — see the affected versions and patch details below.

Published

May 15, 2024

Updated

Nov 29, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 29, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

🐘monolog/monolog

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

Description

A header injection vulnerability has been identified in the NativeMailerHandler of the Monolog library. This vulnerability may allow an attacker to manipulate email headers when log messages are sent via email.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`monolog/monolog`	≥ 1.8.0&&< 1.12.0	1.12.0`composer require monolog/monolog:^1.12.0`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for monolog/monolog, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update monolog/monolog to 1.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f57v-q966-7fh6 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

O3 Security · Impact-Aware SCA

Is GHSA-f57v-q966-7fh6 in your dependencies?

Find it across Packagist, including transitive dependencies.

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