How severe is GHSA-r9q5-c7qc-p26w?

No CVSS score has been assigned to GHSA-r9q5-c7qc-p26w yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-r9q5-c7qc-p26w?

GHSA-r9q5-c7qc-p26w affects the following packages: openclaw (npm). Ecosystems affected: npm.

How do I fix GHSA-r9q5-c7qc-p26w?

Update openclaw to 2026.2.25 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r9q5-c7qc-p26w is resolved across your whole dependency graph.

How do I detect GHSA-r9q5-c7qc-p26w in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw. 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-r9q5-c7qc-p26w 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-r9q5-c7qc-p26w?

O3 pinpoints whether GHSA-r9q5-c7qc-p26w 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-r9q5-c7qc-p26w actively exploited in the wild?

No public exploit code has been indexed for GHSA-r9q5-c7qc-p26w 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-r9q5-c7qc-p26w?

GHSA-r9q5-c7qc-p26w has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 18th 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.

When was GHSA-r9q5-c7qc-p26w published, and has it been updated?

GHSA-r9q5-c7qc-p26w was published on March 3, 2026 and was last updated on March 19, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

GHSA-r9q5-c7qc-p26w

OpenClaw's Nextcloud Talk webhook replay could trigger duplicate inbound processing

Also known asCVE-2026-28449

Published

Mar 3, 2026

Updated

Mar 19, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk18th percentile+0.20%

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

Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.

openclawnpm

3.7Mdownloads / week

Description

Summary

When Nextcloud Talk webhook signing was valid, replayed requests could be accepted without durable replay suppression, allowing duplicate inbound processing after replay-window expiry or process restart.

Details

OpenClaw's Nextcloud Talk webhook path verified HMAC(secret, random + body) but previously lacked durable replay state tied to webhook events. This allowed replay of a previously valid signed request in some operational conditions.

The fix on main adds:

persistent per-account replay dedupe for Nextcloud Talk webhook events,
replay checks before webhook side effects (onMessage),
backend-origin validation against configured account base URL (when configured).

Impact

A captured valid signed webhook request could be replayed to trigger duplicate inbound handling. This is an integrity/availability issue (duplicate actions/noise), scoped to deployments using Nextcloud Talk webhook integration.

Affected Packages / Versions

Package: openclaw (npm)
Affected: <= 2026.2.24
Patched in release: 2026.2.25

Fix Commit(s)

d512163d686ad6741783e7119ddb3437f493dbbc

Release Process Note

patched_versions is pre-set to the release (2026.2.25) so once npm release 2026.2.25 is published, advisory is now published.

OpenClaw thanks @aristorechina for reporting.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`openclaw`	all versions	2026.2.25

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw. 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 openclaw to 2026.2.25 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r9q5-c7qc-p26w 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-r9q5-c7qc-p26w 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-r9q5-c7qc-p26w. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary When Nextcloud Talk webhook signing was valid, replayed requests could be accepted without durable replay suppression, allowing duplicate inbound processing after replay-window expiry or process restart. ### Details OpenClaw's Nextcloud Talk webhook path verified `HMAC(secret, random + body)` but previously lacked durable replay state tied to webhook events. This allowed replay of a previously valid signed request in some operational conditions. The fix on `main` adds: - persistent per-account replay dedupe for Nextcloud Talk webhook events, - replay checks before webhook side ef

O3 Security · Impact-Aware SCA

Is GHSA-r9q5-c7qc-p26w in your dependencies?

O3 detects GHSA-r9q5-c7qc-p26w across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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