CVE-2005-2891: WebArchiveX.dll 5.5.0.76 installed before September 6th, 2005 is marked safe for scripting by default, which a

This month

MEDIUM 6.4DOWNGRADE

CVE-2005-2891 is a medium-severity flaw (CVSS 6.4) affecting webarchivex. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WebArchiveX.dll 5.5.0.76 installed before September 6th, 2005 is marked safe for scripting by default, which allows remote attackers to read or write to arbitrary files via the (1) MakeArchive or (2) MakeArchiveStr methods.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2005-09-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: csystems

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

Am I affected?

Timeline

2005-09-14 20:03 UTCPublished CVE record published
2026-06-16 22:15 UTCUpdated Record last modified

csystems webarchivex DOWNGRADE

Affected: 5.5.0.76

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.5.0.76

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.5.0.76 (Debian / Ubuntu)

apt-cache madison webarchivex sudo apt install webarchivex=<VERSION_BEFORE_5.5.0.76> sudo apt-mark hold webarchivex

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list webarchivex sudo dnf downgrade webarchivex-<VERSION_BEFORE_5.5.0.76> sudo dnf versionlock add webarchivex

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2005-2891?

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

Is CVE-2005-2891 being exploited?

CVE-2005-2891 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-2005-2891 affect?

CVE-2005-2891 affects webarchivex. Severity is medium (CVSS 6.4). WebArchiveX.dll 5.5.0.76 installed before September 6th, 2005 is marked safe for scripting by default, which allows remote attackers to read or write to arbitrary files via the (1) MakeArchive or (2) MakeArchiveStr methods.

How urgent is CVE-2005-2891?

Priority 47/100. Public exploit reference

References

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