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CVE-2022-31779

Improper HTTP/2 scheme and method validation

7.5 HighFix available

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

2.48%Up 1.6 points since Aug 11, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
CVE-2022-31779
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

Improper HTTP/2 scheme and method validation

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
CVE-2022-31779
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2022-53172 No score

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
EUVD-2022-53172
Updated
2026-11-03
GitHub AdvisoriesGHSA-449r-qg4g-v772 7.5

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows...

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
GHSA-449r-qg4g-v772
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-20
Updated
2026-11-02
OSVDEBIAN-CVE-2022-31779 7.5

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
DEBIAN-CVE-2022-31779
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-03
OSVOESA-2022-1855 7.5

trafficserver security update

Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse, forward and transparent proxy and cache.

Security Fix(es):

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.(CVE-2022-31779)

Record
OESA-2022-1855
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVOESA-2022-1856 7.5

trafficserver security update

Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse, forward and transparent proxy and cache.

Security Fix(es):

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.(CVE-2022-31779)

Record
OESA-2022-1856
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2022-31779 7.5

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
UBUNTU-CVE-2022-31779
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSV No score

Improper HTTP/2 scheme and method validation

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Record
CVE-2022-31779
Weakness
CWE-20
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
trafficserver
Debian:12
 before 9.1.3+ds-1
9.1.3+ds-1
trafficserver
Debian:10
From an advisory covering 4 CVEs
 before 8.1.6+ds-1~deb10u1, plus listed versions
8.0.2+ds-18.0.2+ds-1+deb10u18.0.2+ds-1+deb10u28.0.2+ds-1+deb10u38.0.2+ds-1+deb10u4
Show 19 moreShow less
8.0.2+ds-1+deb10u58.0.2+ds-1+deb10u68.0.2+ds-1+deb10u78.0.3+ds-18.0.3+ds-28.0.3+ds-38.0.3+ds-48.0.5+ds-18.0.5+ds-28.0.5+ds-38.0.6+ds-18.0.7+ds-18.0.8+ds-18.0.8+ds-28.1.0+ds-18.1.0+ds-28.1.1+ds-18.1.1+ds-1.18.1.5+ds-1~deb11u1
8.1.6+ds-1~deb10u1
trafficserver
Debian:11
From an advisory covering 6 CVEs
 before 8.1.5+ds-1~deb11u1, plus listed versions
8.1.1+ds-1.18.1.1+ds-1.1+deb11u1
8.1.5+ds-1~deb11u1
trafficserver
openEuler:20.03-LTS-SP1
 before 9.1.3-1.oe1
9.1.3-1.oe1
trafficserver
openEuler:20.03-LTS-SP3
 before 9.1.3-1.oe1
9.1.3-1.oe1
trafficserver
Ubuntu:16.04:LTS
 All versions, plus listed versions
5.3.0-2ubuntu15.3.0-2ubuntu2
 None known
trafficserver
Ubuntu:18.04:LTS
 All versions, plus listed versions
7.0.0-57.1.2+ds-27.1.2+ds-2build17.1.2+ds-3
 None known
trafficserver
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
8.0.5+ds-18.0.5+ds-28.0.5+ds-2build18.0.5+ds-2ubuntu18.0.5+ds-38.0.5+ds-3ubuntu0.1~esm1
 None known
trafficserver
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
8.1.1+ds-1.19.1.1+ds-2build19.1.1+ds-2ubuntu0.1~esm19.1.1+ds-2ubuntu0.19.1.1+ds-2ubuntu0.1+esm1
 None known

History

History
RecordedChangedSources
affected, factsOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-31779 is a high vulnerability (CVSS 7.5) in Apache Traffic Server, published August 10, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.48%, the 84th percentile. Fixed in trafficserver 9.1.3+ds-1.

References

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