🛡️ GHSA-mj73-j457-8x9q — maxminddb

🟢 CVSS 2.0 — Low ✅ No Known Exploit CWE-915 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

maxminddb's Reader::open_mmap unsoundly marks unsafe memmap operation as safe

maxminddb prior to version 0.27 declared Reader::open_mmap as safe despite wrapping an inherently unsafe memmap2 operation with no extra step done to guarantee safety. This could have led to undefined behaviour if the file were to be modified on disk while the memory map was still active.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity low, availability none.

Weakness class

GHSA-mj73-j457-8x9q is classified as CWE-915: Improperly Controlled Modification of Object Attributes. A request can set object fields that were never meant to be writable from outside.

Affected software

GHSA-mj73-j457-8x9q is recorded against 1 package.

  • maxminddb

Timeline and source

Published on 2 December 2025 and last revised on 11 December 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
github.com (Package)
rustsec.org (Web)

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
CWE CWE-915
Public Exploit ✅ No
Source OSV
Published 2025-12-02
Updated 2026-08-20
Modified 2025-12-11
Fix URL N/A

Affected Packages

Software From version Fixed in
maxminddb — —

Similar Threats

Free Vulnerability Check

Is your site affected by GHSA-mj73-j457-8x9q?

BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against GHSA-mj73-j457-8x9q and other known CVE records.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesGitHub AdvisoryGitHub Advisory Undated