TI-2003-00778 Aliases CVE-2003-0843 GHSA-m67q-f688-xmfm

Format string vulnerability in mod_gzip_printf for mod_gzip 1.3.26.1a and earlier, and…

LOW 37Published 2003-10-09 · Updated 2024-08-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Partial · Partial · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Format string vulnerability in mod_gzip_printf for mod_gzip 1.3.26.1a and earlier, and possibly later official versions, when running in debug mode and using the Apache log, allows remote attackers to execute arbitrary code via format string characters in an HTTP GET request with an "Accept-Encoding: gzip" header.

Why it matters now

EPSS 0.02324 83rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:dag_apt_repository:mod_gzip::::::::	up to 1.3.26.1a	Vulnerable	Dag Apt Repository

cpe:2.3:a:dag_apt_repository:mod_gzip:*:*:*:*:*:*:*:* Versions up to 1.3.26.1a Vulnerable ·Dag Apt Repository

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2003-0843
2026-10-03 Alias added: GHSA-m67q-f688-xmfm

References

Other 1

20030601 Mod_gzip Debug Mode Vulnerabilities

TI-2003-00777 Stack-based buffer overflow in mod_gzip_printf for mod_gzip 1.3.26.1a and earlier, and… CVSS 2.0HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences