HOMEVULNERABILITIESCVE-2026-2887
MEDIUMPOC

CVE-2026-2887

CWE-404Published: February 21, 2026· Updated: Feb 26, 2026

5.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.7th

Official Description

A security vulnerability has been detected in aardappel lobster up to 2025.4. This impacts the function lobster::TypeName in the library dev/src/lobster/idents.h. Such manipulation leads to uncontrolled recursion. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. Upgrading to version 2026.1 will fix this issue. The name of the patch is 8ba49f98ccfc9734ef352146806433a41d9f9aa6. It is advisable to upgrade the affected component.

NVD Source

Technical Analysis

CVE-2026-2887 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

A proof-of-concept (PoC) exploit exists for CVE-2026-2887. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

strlen1 product
lobster
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6
ADVISORYhttps://github.com/aardappel/lobster/issues/397
ADVISORYhttps://github.com/aardappel/lobster/issues/397#issuecomment-3849015088
ADVISORYhttps://github.com/oneafter/0204/blob/main/lob3/repro.lobster
ADVISORYhttps://vuldb.com/?id.347181
ADVISORYhttps://vuldb.com/?submit.755026

All References (9)

→
https://github.com/aardappel/lobster/Product
→
https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6Patch
→
https://github.com/aardappel/lobster/issues/397Exploit · Issue Tracking · Vendor Advisory
→
https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088Exploit · Issue Tracking · Vendor Advisory
→
https://github.com/aardappel/lobster/releases/tag/v2026.1Release Notes
→
https://github.com/oneafter/0204/blob/main/lob3/repro.lobsterThird Party Advisory
→
https://vuldb.com/?ctiid.347181Permissions Required · VDB Entry
→
https://vuldb.com/?id.347181Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.755026Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2026-2887
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-404
CISA KEVNo
ExploitPOC
EPSS (30d)0.01%
Affected1 vendor
PublishedFeb 21, 2026

Related CVEs (CWE-404)

CVE-2026-11317
8.7
CVE-2026-1876
8.7
CVE-2026-1875
8.7
CVE-2026-45174
8.5
CVE-2026-2957
8.1
CVE-2026-7734
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-2887 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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