{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2903","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-02-20T20:02:38.891Z","datePublished":"2026-02-22T00:32:09.412Z","dateUpdated":"2026-06-23T15:50:16.004Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-22T00:32:09.412Z"},"title":"skvadrik re2c ast.cc check_and_merge_special_rules null pointer dereference","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-476","lang":"en","description":"NULL Pointer Dereference"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-404","lang":"en","description":"Denial of Service"}]}],"affected":[{"vendor":"skvadrik","product":"re2c","versions":[{"version":"4.0","status":"affected"},{"version":"4.1","status":"affected"},{"version":"4.2","status":"affected"},{"version":"4.3","status":"affected"},{"version":"4.4","status":"affected"}],"cpes":["cpe:2.3:a:re2c:re2c:*:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be executed locally. The exploit has been published and may be used. Patch name: febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"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","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"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","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-02-20T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-02-20T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-20T21:07:45.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.347210","name":"VDB-347210 | skvadrik re2c ast.cc check_and_merge_special_rules null pointer dereference","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.347210","name":"VDB-347210 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.755030","name":"Submit #755030 | skvadrik re2c  04f1424 NULL Pointer Dereference","tags":["third-party-advisory"]},{"url":"https://github.com/skvadrik/re2c/issues/571","tags":["issue-tracking"]},{"url":"https://github.com/skvadrik/re2c/issues/571#issuecomment-3837675101","tags":["issue-tracking"]},{"url":"https://github.com/oneafter/0202/blob/main/re/repro","tags":["exploit"]},{"url":"https://github.com/skvadrik/re2c/commit/febeb977936f9519a25d9fbd10ff8256358cdb97","tags":["patch"]},{"url":"https://github.com/skvadrik/re2c/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-26T16:21:03.435710Z","id":"CVE-2026-2903","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-23T15:50:16.004Z"}}]}}