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CVE-2026-2259

Good to know:

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Date: February 9, 2026

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.

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2026-2259
https://github.com/aardappel/lobster/issues/396#issuecomment-3849019040
https://vuldb.com/?id.345006
https://github.com/aardappel/lobster/issues/396
https://vuldb.com/?submit.753168
https://github.com/aardappel/lobster/
https://vuldb.com/?ctiid.345006
https://github.com/oneafter/0204/blob/main/lob2/repro.lobster
https://github.com/aardappel/lobster/commit/2f45fe860d00990e79e13250251c1dde633f1f89
https://www.mend.io/vulnerability-database/CVE-2026-2259

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

CVSS v3

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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