CVE-2005-4521

Status: ModifiedMedium (5)—

CRLF injection vulnerability in Mantis 1.0.0rc3 and earlier allows remote attackers to modify HTTP headers and conduct HTTP response splitting attacks via (1) the return parameter in login_cookie_test.php and (2) ref parameter in login_select_proj_page.php.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Base score: 5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.17%
Percentile among all scored CVEs: 82
Score date: 10/10/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Mantis — Mantis^AI

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
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          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
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          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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  "published": "2005-12-28T01:03:00.000",
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    }
  ],
  "lastModified": "2026-06-16T22:18:57.270",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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}