How severe is CVE-2005-1656?

CVE-2005-1656 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2005-1656 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-1656?

CVE-2005-1656 affects Mercur Mercur Messaging. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-1656?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2005-1656 published?

CVE-2005-1656 was published on 2005-05-18 and last updated on 2026-06-16.

CVE-2005-1656

CVE-2005-1656 is a medium-severity vulnerability in Mercur Mercur Messaging with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mercur Mercur Messaging
Published: 2005-05-18
Last modified: 2026-06-16

Description

Mercur Messaging 2005 SP2 allows remote attackers to read the source code of .ctml files via a URL with a trailing hex-encoded space ("%20").

Frequently asked questions

What is CVE-2005-1656?: Mercur Messaging 2005 SP2 allows remote attackers to read the source code of .ctml files via a URL with a trailing hex-encoded space ("%20").
How severe is CVE-2005-1656?: CVE-2005-1656 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2005-1656 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-1656?: CVE-2005-1656 affects Mercur Mercur Messaging. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-1656?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-1656 published?: CVE-2005-1656 was published on 2005-05-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mercur:mercur_messaging:2005_sp2:*:*:*:*:*:*:*

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