Skip to main content
No exploitation reportedFix available

CVE-2022-22707

No exploitation reported by the sources we read.

  • Published2022-01-06
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.

Timeline

dates in UTC
  1. 2022-01-0606:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-22707?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-22707?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
lighttpd
BranchAffectedFixed in
1.4≥ 1.4.46, ≤ 1.4.63no fix published
Debian debian linux
BranchAffectedFixed in
10.0= 10.0no fix published
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • lighttpdUbuntu:22.04:LTSall versions · fixed in 1.4.63-1ubuntu3.1
  • lighttpdUbuntu:20.04:LTSall versions · fixed in 1.4.55-1ubuntu1.20.04.2
  • lighttpdSUSE:Package Hub 15 SP3all versions · fixed in 1.4.64-bp153.2.3.1
  • lighttpdopenSUSE:Tumbleweedall versions · fixed in 1.4.64-1.1
  • lighttpdopenSUSE:Leap 15.3all versions · fixed in 1.4.64-bp153.2.3.1
  • lighttpdopenEuler:20.03-LTS-SP3all versions · fixed in 1.4.53-2.oe1
  • lighttpdopenEuler:20.03-LTS-SP2all versions · fixed in 1.4.53-2.oe1
  • lighttpdopenEuler:20.03-LTS-SP1all versions · fixed in 1.4.53-2.oe1

19 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-22707 Red Hat Product Security

    lighttpd: mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.15.9read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score9.6 %2026-11-03
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2022-01-06
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2022-22707?

In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.

Is CVE-2022-22707 actively exploited?

Active exploitation of CVE-2022-22707 has not been confirmed. Its EPSS score was 9.6% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-22707?

CVE-2022-22707 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running lighttpd? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record