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CVE-2026-2887

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4d3e793fbe388473d0cabda2e1def40bb672bc82274d6c65fa959176f2168be6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/3/cvssV2_0
cwe · 2 assertions

{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-674","description":"Uncontrolled Recursion","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"lobster","vendor":"aardappel","versions":[{"status":"affected","version":"2025.0"},{"status":"affected","version":"2025.1"},{"status":"affected","version":"2025.2"},{"status":"affected","version":"2025.3"},{"status":"affected","version":"2025.4"},{"status":"unaffected","version":"2026.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

2 source assertions
{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-674","description":"Uncontrolled Recursion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/problemTypes/0/descriptions/0

Source references

9 source assertions
{"tags":["product"],"url":"https://github.com/aardappel/lobster/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/8
{"tags":["patch"],"url":"https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/6
{"tags":["issue-tracking"],"url":"https://github.com/aardappel/lobster/issues/397"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/3
{"tags":["issue-tracking"],"url":"https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/4
{"tags":["patch"],"url":"https://github.com/aardappel/lobster/releases/tag/v2026.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/7
{"tags":["exploit"],"url":"https://github.com/oneafter/0204/blob/main/lob3/repro.lobster"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/5
{"name":"VDB-347181 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.347181"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/1
{"name":"VDB-347181 | aardappel lobster idents.h TypeName recursion","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.347181"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/0
{"name":"Submit #755026 | aardappel lobster c8a6042 Uncontrolled Recursion","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.755026"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9590bc0d3e923977d8be950a976abb6061f5d92e70c1794d430e371b088f153 · sha256:9205e0a128336464… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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