PT-2026-21396 · Unknown · Aardappel Lobster

Oneafter · Published 2026-02-21 · Updated 2026-02-22 · CVE-2026-2887

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions aardappel lobster versions prior to 2026.1

Description A security issue exists in aardappel lobster up to version 2025.4. The lobster::TypeName function within the dev/src/lobster/idents.h library is susceptible to uncontrolled recursion. This manipulation can only be initiated from a local environment. The exploit for this issue has been publicly disclosed.

Recommendations Upgrade to version 2026.1 to resolve this issue.

Exploit

Fix

Improper Resource Release

Uncontrolled Recursion

Weakness Enumeration

CWE-404

CWE-674

Related Identifiers

CVE-2026-2887

Affected Products

Aardappel Lobster

References · 15

• 🔥 https://github.com/oneafter/0204/blob/main/lob3/repro.lobster · Exploit
• https://github.com/aardappel/lobster/releases/tag/v2026.1 · Patch
• https://github.com/aardappel/lobster/issues/397 · Vendor Advisory
• https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6 · Patch
• https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2887 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2887 · Vendor Advisory
• https://t.me/cveNotify/152738 · Telegram Post
• https://vuldb.com/?id.347181 · Note
• https://twitter.com/CVEnew/status/2025425453738328153 · Twitter Post
• https://github.com/aardappel/lobster · Note
• https://vuldb.com/?submit.755026 · Note
• https://vuldb.com/?ctiid.347181 · Note
• https://t.me/CVEtracker/45397 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2025321483531088132 · Twitter Post