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NVD Vulnerability Details :
CVE-2026-2903
Awaiting Analysis
More InfoOfficial Page
Source-cna@vuldb.com
View Known Exploited Vulnerability (KEV) details
Published At-22 Feb, 2026 | 01:16
Updated At-23 Feb, 2026 | 18:13

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.04.8MEDIUM
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.13.3LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Secondary2.01.7LOW
AV:L/AC:L/Au:S/C:N/I:N/A:P
Type: Secondary
Version: 4.0
Base score: 4.8
Base severity: MEDIUM
Vector:
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 3.3
Base severity: LOW
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Type: Secondary
Version: 2.0
Base score: 1.7
Base severity: LOW
Vector:
AV:L/AC:L/Au:S/C:N/I:N/A:P
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-404Primarycna@vuldb.com
CWE-476Primarycna@vuldb.com
CWE ID: CWE-404
Type: Primary
Source: cna@vuldb.com
CWE ID: CWE-476
Type: Primary
Source: cna@vuldb.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/oneafter/0202/blob/main/re/reprocna@vuldb.com
N/A
https://github.com/skvadrik/re2c/cna@vuldb.com
N/A
https://github.com/skvadrik/re2c/commit/febeb977936f9519a25d9fbd10ff8256358cdb97cna@vuldb.com
N/A
https://github.com/skvadrik/re2c/issues/571cna@vuldb.com
N/A
https://github.com/skvadrik/re2c/issues/571#issuecomment-3837675101cna@vuldb.com
N/A
https://vuldb.com/?ctiid.347210cna@vuldb.com
N/A
https://vuldb.com/?id.347210cna@vuldb.com
N/A
https://vuldb.com/?submit.755030cna@vuldb.com
N/A
Hyperlink: https://github.com/oneafter/0202/blob/main/re/repro
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://github.com/skvadrik/re2c/
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://github.com/skvadrik/re2c/commit/febeb977936f9519a25d9fbd10ff8256358cdb97
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://github.com/skvadrik/re2c/issues/571
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://github.com/skvadrik/re2c/issues/571#issuecomment-3837675101
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/?ctiid.347210
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/?id.347210
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/?submit.755030
Source: cna@vuldb.com
Resource: N/A
Change History
0Changes found
Details not found