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Servers and applications

CVE-2012-5533

The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote attackers to cause a denial of service (infinite loop) via a request with a header containing an empty token, as demonstrated using the "Connection: TE,,Keep-Alive" header.

Severity
Medium 5.0
Published
24 Nov 2012
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
12% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
lighttpdServers and applications · cpe:a:lighttpd:lighttpd
  • Version 1.4.31
  • Version 1.4.32

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2012-5533
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2012-5533