Buffer overflow in Aardappel Lobster
CVE-2026-2259
A vulnerability has been found in aardappel lobster up to 2025.4. Affected by this issue is the function lobster::Parser::ParseStatements in the library dev/src/lobster/parser.h of the component Parsing. The manipulation leads to memory corruption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The identifier of the patch is 2f45fe860d00990e79e13250251c1dde633f1f89. Applying a patch is the recommended action to fix this issue.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (12.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Aardappel Lobster — versions 2025.0, 2025.1, 2025.2
- Strlen Lobster
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/aardappel/lobster/issues/396 (issue-tracking, Patch, Issue Tracking, Vendor Advisory)
- github.com/aardappel/lobster/issues/396 (issue-tracking, Patch, Issue Tracking, Vendor Advisory)
- github.com/oneafter/0204/blob/main/lob2/repro.lobster (Exploit, exploit)
- github.com/aardappel/lobster/commit/2f45fe860d00990e79e13250251c1dde633f1f89 (Patch, patch)
- github.com/aardappel/lobster/ (Product, product)
Frequently asked questions
- What is CVE-2026-2259?
- CVE-2026-2259 is a low-severity vulnerability in Aardappel Lobster, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-02-10.
- How severe is CVE-2026-2259?
- Low severity. CVSS v3 base score is 3.3 out of 10.