# Bouncy Castle Denial of Service (DoS)

Advisory record · `GHSA-wjxj-5m7g-mg7q`

- **Identifiers:** `GHSA-wjxj-5m7g-mg7q` · `CVE-2023-33202`
- **State:** Confirmed
- **Severity:** CVSS 5.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-400](https://cwe.mitre.org/data/definitions/400.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 23 Nov 2023
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 23 Nov 2023, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.bouncycastle:bcprov-ext-jdk16` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-jdk14` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-jdk15` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-jdk15to18` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-jdk16` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-jdk15on` (Maven): affected `all versions`; no fixed version yet
- `org.bouncycastle:bcpkix-jdk18on` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-ext-jdk15on` (Maven): affected `<1.73`; fixed in `1.73`
- `org.bouncycastle:bcprov-jdk18on` (Maven): affected `<1.73`; fixed in `1.73`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Bouncy Castle for Java versions before 1.73 are affected, and bcprov-jdk15on is listed as affected in all versions with no fixed version. Parsing a file containing crafted ASN.1 data with the PEMParser class causes an OutOfMemoryError, which can enable a denial of service. Upgrade the affected packages to 1.73; no fix is listed for bcprov-jdk15on.

Written 2 Nov 2026.

## 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

- 5.5 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0100, the 63rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:18 UTC: First seen by agentprime
- 31 Oct 2026, 14:18 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-wjxj-5m7g-mg7q)

## Sources

- [GitHub Advisory Database: GHSA-wjxj-5m7g-mg7q](https://github.com/advisories/GHSA-wjxj-5m7g-mg7q)
- [OSV: GHSA-wjxj-5m7g-mg7q](https://osv.dev/vulnerability/GHSA-wjxj-5m7g-mg7q)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-33202>
- <https://github.com/bcgit/bc-java/commit/0c576892862ed41894f49a8f639112e8d66d229c>
- <https://bouncycastle.org/>
- <https://github.com/bcgit/bc-java>
- <https://github.com/bcgit/bc-java/wiki/CVE-2023-33202>
- <https://security.netapp.com/advisory/ntap-20240125-0001>

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-wjxj-5m7g-mg7q>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-wjxj-5m7g-mg7q/>. Everything for agents: <https://agentprime.io/llms.txt>.