How severe is GHSA-v5c9-mmw9-829q?

No CVSS score has been assigned to GHSA-v5c9-mmw9-829q yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-v5c9-mmw9-829q?

GHSA-v5c9-mmw9-829q affects the following packages: phpmailer/phpmailer (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-v5c9-mmw9-829q?

Update phpmailer/phpmailer to 5.2.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-v5c9-mmw9-829q is resolved across your whole dependency graph.

How do I detect GHSA-v5c9-mmw9-829q in my Packagist dependencies?

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

How do I mitigate GHSA-v5c9-mmw9-829q if there is no patch (or I can't update yet)?

Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Is GHSA-v5c9-mmw9-829q actively exploited in the wild?

Yes. There are 4 known exploit references for GHSA-v5c9-mmw9-829q, including 2 documented proof-of-concept exploits on Exploit-DB and 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-v5c9-mmw9-829q?

GHSA-v5c9-mmw9-829q has an EPSS (Exploit Prediction Scoring System) score of 58.6%, placing it in the 99th 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. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is GHSA-v5c9-mmw9-829q?

GHSA-v5c9-mmw9-829q is classified as Code Injection (CWE-94). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-v5c9-mmw9-829q published, and has it been updated?

GHSA-v5c9-mmw9-829q was published on May 14, 2022 and was last updated on December 5, 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

PHPMailer susceptible to arbitrary code executionGHSA-v5c9-mmw9-829q

Fix: PHPMailer/PHPMailer@8beacc6

GHSA-v5c9-mmw9-829q is a Code Injection vulnerability in phpmailer/phpmailer. 4 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for phpmailer/phpmailer — see the affected versions and patch details below.

Also known asCVE-2008-5619

Published

May 14, 2022

Updated

Dec 5, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

4 known

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

58.6%probability of exploitation in next 30 days

High Risk0.00%

Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

🐘phpmailer/phpmailer

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

html2text.php in Chuggnutt HTML to Text Converter, as used in PHPMailer before 5.2.10, RoundCube Webmail (roundcubemail) 0.2-1.alpha and 0.2-3.beta, Mahara, and AtMail Open 1.03, allows remote attackers to execute arbitrary code via crafted input that is processed by the preg_replace function with the eval switch.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`phpmailer/phpmailer`	all versions	5.2.10`composer require phpmailer/phpmailer:^5.2.10`

Affected Products

1 product · 2 configurations

Application

webmailroundcube

2 versions

0.2.10.2.3

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-7549webappsphp✓ Verified

Roundcube Webmail 0.2-3 Beta - Code Execution

by Jacobo Avariento · Dec 22, 2008

Exploit-DB Source

EDB-7553webappsphp✓ Verified

Roundcube Webmail 0.2b - Remote Code Execution

by Hunger · Dec 22, 2008

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpmailer/phpmailer, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update phpmailer/phpmailer to 5.2.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-v5c9-mmw9-829q is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Ubuntu

USN-791-1Ubuntu