CVE-2004-0520

NONECVSS 0.0Weaponized

0.0

Cross-site scripting (XSS) vulnerability in mime.php for SquirrelMail before 1.4.3 allows remote attackers to insert arbitrary HTML and script via the content-type mail header, as demonstrated using read_body.php.

CVSS v3: —
EG Score: —
EPSS: 94.7%
KEV: Not listed

Published

August 18, 2004

Last Modified

April 16, 2026

References (30)

cve@mitreftp://patches.sgi.com/support/free/security/advisories/20040604-01-U.asc
cve@mitrehttp://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000858
cve@mitrehttp://marc.info/?l=bugtraq&m=108611554415078&w=2
cve@mitrehttp://marc.info/?l=squirrelmail-cvs&m=108532891231712
cve@mitrehttp://rhn.redhat.com/errata/RHSA-2004-240.html
cve@mitrehttp://secunia.com/advisories/11870
cve@mitrehttp://secunia.com/advisories/12289
cve@mitrehttp://www.debian.org/security/2004/dsa-535
cve@mitrehttp://www.gentoo.org/security/en/glsa/glsa-200406-08.xml
cve@mitrehttp://www.rs-labs.com/adv/RS-Labs-Advisory-2004-1.txt
cve@mitrehttp://www.securityfocus.com/advisories/6827
cve@mitrehttp://www.securityfocus.com/bid/10439
cve@mitrehttps://bugzilla.fedora.us/show_bug.cgi?id=1733
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1012
cve@mitrehttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10766

Data Freshness Timeline

(refreshed 11× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-24160✓ verified
First seen May 31, 2004
SquirrelMail 1.x - Email Header HTML Injection
Open source ↗

Frequently asked(4)

What is CVE-2004-0520?

CVE-2004-0520 is a none vulnerability published on August 18, 2004. Cross-site scripting (XSS) vulnerability in mime.php for SquirrelMail before 1.4.3 allows remote attackers to insert arbitrary HTML and script via the content-type mail header, as demonstrated using read_body.php.

When was CVE-2004-0520 disclosed?

CVE-2004-0520 was first published in the National Vulnerability Database on August 18, 2004, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2004-0520 actively exploited?

CVE-2004-0520 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2004-0520?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-0520, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2004-0520

📅 Published

🔄 Last Modified

🔗 References (30)