CVE-2001-0901: Hypermail allows remote attackers to execute arbitrary commands on a server supporting SSI via an attachment w

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HIGH 7.5MITIGATE

CVE-2001-0901 is a high-severity flaw (CVSS 7.5) affecting hypermail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Hypermail allows remote attackers to execute arbitrary commands on a server supporting SSI via an attachment with a .shtml extension, which is archived on the server and can then be executed by requesting the URL for the attachment.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.6% (top 15%)
CISA exploited list	No
Weakness	CWE-434
Published	2001-11-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hypermail development

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2001-11-19 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

hypermail development hypermail MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hypermail || rpm -q hypermail || hypermail --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2001-0901?

hypermail: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0901 being exploited?

CVE-2001-0901 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2001-0901 affect?

CVE-2001-0901 affects hypermail. Severity is high (CVSS 7.5). Hypermail allows remote attackers to execute arbitrary commands on a server supporting SSI via an attachment with a .shtml extension, which is archived on the server and can then be executed by requesting the URL for the attachment.

How urgent is CVE-2001-0901?

Priority 48/100. High severity

Related CVEs

CVE-2010-4339 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in Hypermail 2.2.0 allows remote attackers to inject arbitrary web sc
CVE-2003-0057 HIGH 7.5 DOWNGRADE Multiple buffer overflows in Hypermail 2 before 2.1.6 allows remote attackers to cause a denial of service and

References

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