CVE-2004-1620

Serendipity vulnerability

CVSS

5.0

EPSS

8.1%

EPSS pct

94th

Exploited

No known

CRLF injection vulnerability in Serendipity before 0.7rc1 allows remote attackers to perform HTTP Response Splitting attacks to modify expected HTML content from the server via the url parameter in (1) index.php and (2) exit.php, or (3) the HTTP Referer field in comment.php.

Affected vendor

S9y

Affected product

Serendipity

CVSS vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Published

2004-10-21

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to integrity.

Its EPSS score of 8.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2004-1620

Confirm whether S9y Serendipity is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2004-1620.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2004-1620

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2004-1620 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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