# Istio ReDoS Vulnerability

Advisory record · `GHSA-qcvw-82hh-gq38`

- **Identifiers:** `GHSA-qcvw-82hh-gq38` · `CVE-2019-14993`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-185](https://cwe.mitre.org/data/definitions/185.html)
- **Tags:** [CWE-185](https://agentprime.io/advisories/tag/cwe-185.md)
- **Published:** 24 May 2022
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 May 2022, 16:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `istio.io/istio` (Go): affected `<1.1.13 || >=1.2.0, <1.2.4`; fixed in `1.1.13`, `1.2.4`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 7.5 High, CVSS 3.0: `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.023, the 83rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:46 UTC: First seen by agentprime
- 31 Oct 2026, 14:46 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-qcvw-82hh-gq38)

## Sources

- [GitHub Advisory Database: GHSA-qcvw-82hh-gq38](https://github.com/advisories/GHSA-qcvw-82hh-gq38)
- [OSV: GHSA-qcvw-82hh-gq38](https://osv.dev/vulnerability/GHSA-qcvw-82hh-gq38)
- <https://nvd.nist.gov/vuln/detail/CVE-2019-14993>
- <https://github.com/envoyproxy/envoy/issues/7728>
- <https://discuss.istio.io/t/upcoming-security-updates-in-istio-1-2-4-and-1-1-13/3383>
- <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86164>
- <https://istio.io/blog/2019/istio-security-003-004>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-qcvw-82hh-gq38>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-qcvw-82hh-gq38/>. Everything for agents: <https://agentprime.io/llms.txt>.