CVE-2026-2259: A vulnerability has been found in aardappel lobster up to 2025.4

Q: How do I fix CVE-2026-2259?

lobster: upgrade to newer than 2025.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-2259 being exploited?

CVE-2026-2259 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-2259 affect?

CVE-2026-2259 affects lobster. Severity is low (CVSS 3.3). 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 cor

Q: How urgent is CVE-2026-2259?

Priority 20/100. Public exploit reference

Routine

LOW 3.3UPGRADE

CVE-2026-2259 is a low-severity flaw (CVSS 3.3) affecting lobster. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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. Applyin

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-119, CWE-787
Published	2026-02-10
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: strlen

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-10 04:16 UTCPublished CVE record published
2026-06-17 10:30 UTCUpdated Record last modified

strlen lobster UPGRADE

Affected: <= 2025.4

Fixed in: newer than 2025.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lobster || rpm -q lobster || lobster --version

2. UPGRADE to newer than 2025.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lobster

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lobster

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2259?

lobster: upgrade to newer than 2025.4. Exact commands for each OS are on this page.

Is CVE-2026-2259 being exploited?

CVE-2026-2259 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2259 affect?

CVE-2026-2259 affects lobster. Severity is low (CVSS 3.3). 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 cor

How urgent is CVE-2026-2259?

Priority 20/100. Public exploit reference

Related CVEs

CVE-2026-2887 LOW 3.3 UPGRADE A security vulnerability has been detected in aardappel lobster up to 2025.4
CVE-2026-2258 LOW 3.3 UPGRADE A flaw has been found in aardappel lobster up to 2025.4

References

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