CVE-2026-107731

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Source

https://cve.org/CVERecord?id=CVE-2026-107731

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107731.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-107731

Aliases

GHSA-753j-hx3p-xm9g

Published

2026-10-08T22:20:36Z

Modified

2026-10-11T07:05:42Z

Severity

5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator

Summary

SumatraPDF: LIT parser range-validation flaws cause invalid-pointer reads and denial of service

Details

SumatraPDF is a multi-format reader for Windows. In 3.7.0.22298, four independently reachable range-validation variants in src/LitDoc.cpp allow file-controlled offsets and sizes to overflow, narrow to negative values, or wrap before incomplete bounds checks. The affected calculations include contentOffset, the directory expression dirOff64 + dirLen64, and the decoded-section offset + size, along with secondary-header range handling. Opening a crafted LIT file that reaches one of these variants can cause invalid pointer reads and deterministic application termination. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107731.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "3.7.0.22298"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/sumatrapdfreader/sumatrapdf

Affected ranges

Type

GIT

Repo

https://github.com/sumatrapdfreader/sumatrapdf

Events

Introduced

Fixed

5d43b8cf9c45335ffd47e616bfa27648f17d0b63

Database specific

Show details

{
    "source": "REFERENCES"
}

Affected versions

1.*

1.4split

1.5split

1.6split

1.7split

1.8split

1.9split

2.*

2.0split

2.1split

2.2split

2.3split

2.4split

2.5split

3.*

3.0split

3.1.2rel

3.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107731.json"

vanir_signatures

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vanir_signatures_modified

"2026-10-11T07:05:42Z"