CVE-2004-1507

Exp

CRLF injection vulnerability in login.php in WebCalendar allows remote attackers to inject CRLF sequences via the return_path parameter and perform HTTP Response Splitting attacks to modify expected HTML content from the server.

Published: 2004-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-1507 is rated Exploit Available (55.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.41%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2004-1507

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2004-1507

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.46% 0.41% -0.05%
2 2025-03-29 0.41% 0.46% +0.05%
3 2025-03-17 — 0.41% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-1507

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2004-1507

Affected software / configurations for CVE-2004-1507

Vendor Product Version Raw CPE
webcalendar webcalendar 0.9.8 cpe:2.3:a:webcalendar:webcalendar:0.9.8:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.11 cpe:2.3:a:webcalendar:webcalendar:0.9.11:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.15 cpe:2.3:a:webcalendar:webcalendar:0.9.15:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.16 cpe:2.3:a:webcalendar:webcalendar:0.9.16:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.19 cpe:2.3:a:webcalendar:webcalendar:0.9.19:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.20 cpe:2.3:a:webcalendar:webcalendar:0.9.20:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.21 cpe:2.3:a:webcalendar:webcalendar:0.9.21:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.22 cpe:2.3:a:webcalendar:webcalendar:0.9.22:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.23 cpe:2.3:a:webcalendar:webcalendar:0.9.23:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.24 cpe:2.3:a:webcalendar:webcalendar:0.9.24:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.25 cpe:2.3:a:webcalendar:webcalendar:0.9.25:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.26 cpe:2.3:a:webcalendar:webcalendar:0.9.26:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.27 cpe:2.3:a:webcalendar:webcalendar:0.9.27:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.28 cpe:2.3:a:webcalendar:webcalendar:0.9.28:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.29 cpe:2.3:a:webcalendar:webcalendar:0.9.29:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.30 cpe:2.3:a:webcalendar:webcalendar:0.9.30:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.31 cpe:2.3:a:webcalendar:webcalendar:0.9.31:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.32 cpe:2.3:a:webcalendar:webcalendar:0.9.32:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.33 cpe:2.3:a:webcalendar:webcalendar:0.9.33:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.34 cpe:2.3:a:webcalendar:webcalendar:0.9.34:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.35 cpe:2.3:a:webcalendar:webcalendar:0.9.35:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.36 cpe:2.3:a:webcalendar:webcalendar:0.9.36:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.37 cpe:2.3:a:webcalendar:webcalendar:0.9.37:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.38 cpe:2.3:a:webcalendar:webcalendar:0.9.38:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.39 cpe:2.3:a:webcalendar:webcalendar:0.9.39:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.40 cpe:2.3:a:webcalendar:webcalendar:0.9.40:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.41 cpe:2.3:a:webcalendar:webcalendar:0.9.41:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.42 cpe:2.3:a:webcalendar:webcalendar:0.9.42:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.43 cpe:2.3:a:webcalendar:webcalendar:0.9.43:*:*:*:*:*:*:*
webcalendar webcalendar 0.9.44 cpe:2.3:a:webcalendar:webcalendar:0.9.44:*:*:*:*:*:*:*

References for CVE-2004-1507

cvelogic Threat Intelligence