How severe is GHSA-7rg2-qxmf-hhx9?

GHSA-7rg2-qxmf-hhx9 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 GHSA-7rg2-qxmf-hhx9?

GHSA-7rg2-qxmf-hhx9 affects the following packages: express-openid-connect (npm). Ecosystems affected: npm.

How do I fix GHSA-7rg2-qxmf-hhx9?

Update express-openid-connect to 2.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7rg2-qxmf-hhx9 is resolved across your whole dependency graph.

How do I detect GHSA-7rg2-qxmf-hhx9 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for express-openid-connect. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-7rg2-qxmf-hhx9 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.

How does O3 Security protect against GHSA-7rg2-qxmf-hhx9?

O3 pinpoints whether GHSA-7rg2-qxmf-hhx9 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-7rg2-qxmf-hhx9 actively exploited in the wild?

No public exploit code has been indexed for GHSA-7rg2-qxmf-hhx9 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 GHSA-7rg2-qxmf-hhx9?

GHSA-7rg2-qxmf-hhx9 has an EPSS (Exploit Prediction Scoring System) score of 0.9%, placing it in the 55th 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 GHSA-7rg2-qxmf-hhx9?

GHSA-7rg2-qxmf-hhx9 is classified as CWE-384 (CWE-384). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-7rg2-qxmf-hhx9 published, and has it been updated?

GHSA-7rg2-qxmf-hhx9 was published on December 9, 2021 and was last updated on March 13, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-7rg2-qxmf-hhx9: Session fixation in express-openid-connect…

EPSS Exploitation Probability

via FIRST.org ↗

0.9%probability of exploitation in next 30 days

Lower Risk55th percentile+0.51%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

📦express-openid-connect

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

Description

Overview

Versions 2.3.0 up to and including 2.5.1 do not regenerate the session id and session cookie when user logs in. This behavior opens up the application to various session fixation vulnerabilities.

Am I affected?

You are affected by this vulnerability if you are using express-openid-connect version 2.3.0 up to and including 2.5.1 and use a custom session store.

How to fix that?

Upgrade to version >= 2.5.2.

Will this update impact my users?

The fix provided in patch will not affect your users.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`express-openid-connect`	≥ 2.3.0&&< 2.5.2	2.5.2

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for express-openid-connect. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update express-openid-connect to 2.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7rg2-qxmf-hhx9 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.
How O3 protects you
O3 pinpoints whether GHSA-7rg2-qxmf-hhx9 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-7rg2-qxmf-hhx9. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Overview Versions `2.3.0` up to and including `2.5.1` do not regenerate the session id and session cookie when user logs in. This behavior opens up the application to various session fixation vulnerabilities. ### Am I affected? You are affected by this vulnerability if you are using `express-openid-connect` version `2.3.0` up to and including `2.5.1` and use a custom session store. ### How to fix that? Upgrade to version `>= 2.5.2`. ### Will this update impact my users? The fix provided in patch will not affect your users.

O3 Security · Impact-Aware SCA

Is GHSA-7rg2-qxmf-hhx9 in your dependencies?

O3 detects GHSA-7rg2-qxmf-hhx9 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

GHSA-7rg2-qxmf-hhx9