CVE-2005-4426: n/a vulnerability

CVE-2005-4426: Interpretation conflict in YaBB before 2.1 allows remote authenticated users to inject arbitrary web script...

Interpretation conflict in YaBB before 2.1 allows remote authenticated users to inject arbitrary web script or HTML via HTML in a file with a GIF file extension, which causes the HTML to be executed by a victim who views the file in Internet Explorer as a result of CVE-2005-3312. NOTE: it could be argued that this vulnerability is due to a design flaw in Internet Explorer and the proper fix should be in that browser; if so, then this should not be treated as a vulnerability in YaBB.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 23:46 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2005-4426 concerns older YaBB forum software before 2.1. An authenticated user could upload content that appeared to be an image but could run script or HTML when viewed by a victim in Internet Explorer. Business risk is mainly legacy forum exposure and user-session compromise, not broad unauthenticated takeover. Exposure is most likely in legacy YaBB deployments before version 2.1 that allow authenticated users to upload or attach files viewed by other users, especially where Internet Explorer clients are still relevant. Treat this as a legacy-platform hygiene issue. It is not listed as known exploited, but unsupported forums with uploads can create avoidable compromise paths and should be upgraded, restricted, or retired. Mitigation focus: Inventory YaBB forums and identify any versions older than 2.1.; Upgrade legacy YaBB deployments to 2.1 or later where supported.; Restrict attachment uploads by untrusted or newly registered users..

Prepared: Jun 29, 2026, 15:49 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 20, 2005, 11:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
yabb-image-attachment-xss(23020)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

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CWE details

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