CVE-2023-50249 is a high-severity (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in @sentry/astro. A fix is available for @sentry/astro — see the affected versions and patch details below.
Sentry's Astro SDK vulnerable to ReDoS
EPSS Exploitation Probability
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
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
@sentry/astronpmDescription
Impact
A ReDoS (Regular expression Denial of Service) vulnerability has been identified in Sentry's Astro SDK 7.78.0-7.86.0. Under certain conditions, this vulnerability allows an attacker to cause excessive computation times on the server, leading to denial of service (DoS).
Applications that are using Sentry's Astro SDK are affected if:
- They're using Sentry instrumentation:
- they have manually registered Sentry Middleware (affected versions 7.78.0-7.86.0);
- or configured Astro in SSR (server) or hybrid mode, use Astro 3.5.0 and newer and didn’t disable the automatic server instrumentation (affected versions 7.82.0-7.86.0).
- They have configured routes with at least two path params (e.g.
/foo/[p1]/bar/[p2]).
Patches
The problem has been patched in @sentry/[email protected]. The corresponding PR: https://github.com/getsentry/sentry-javascript/pull/9815
Workarounds
We strongly recommend upgrading to the latest SDK version. However, if it's not possible, the steps to mitigate the vulnerability without upgrade are:
- disable auto instrumentation if you're using Astro 3.5.0 or newer
- and remove the manually added Sentry middleware (if it was added before).
After these changes, Sentry error reporting will still be functional, but some details such as server-side transactions (and consequently, distributed traces between client and server) will be omitted. We therefore still recommend to update to 7.87.0 as soon as you can.
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @sentry/astro | ≥ 7.78.0&&< 7.87.0 | 7.87.0npm install @sentry/astro@7.87.0 |
Affected Products
astrosentryDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @sentry/astro, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update @sentry/astro to 7.87.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-50249 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is CVE-2023-50249 in your dependencies?
Find it across npm, including transitive dependencies.