CVE-2026-2903

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Source
https://cve.org/CVERecord?id=CVE-2026-2903
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-2903.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-2903
Downstream
AZL (2)
BELL (1)
DEBIAN (1)
ECHO (1)
UBUNTU (1)
Published
2026-02-22T00:32:09Z
Modified
2026-10-06T02:36:38Z
Severity
  • 1.9 (Low) CVSS_V4 - 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 CVSS Calculator
Summary
skvadrik re2c ast.cc check_and_merge_special_rules null pointer dereference
Details

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.

Database specific 
{
    "cna_assigner":  "VulDB",
    "cwe_ids":  [
        "CWE-404",
        "CWE-476"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2903.json"
}
References

Affected packages

Git / github.com/skvadrik/re2c

Affected ranges

Type
GIT
Repo
https://github.com/skvadrik/re2c
Events
Introduced
b8a4cddf80692486e8780d2a3ffc8a7e82acebbc
Fixed
febeb977936f9519a25d9fbd10ff8256358cdb97
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "4.0"
        },
        {
            "last_affected":  "4.0"
        },
        {
            "introduced":  "4.1"
        },
        {
            "last_affected":  "4.1"
        },
        {
            "introduced":  "4.2"
        },
        {
            "last_affected":  "4.2"
        },
        {
            "introduced":  "4.3"
        },
        {
            "last_affected":  "4.3"
        },
        {
            "introduced":  "4.4"
        },
        {
            "last_affected":  "4.4"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

4.*
4.0
4.0.1
4.0.2
4.1
4.2
4.3
4.3.1
4.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-2903.json"