7.5

CVE-2024-31309: apache software foundation apache traffic server Improper Input Validation

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2024-31309DEBIAN-CVE-2024-31309DLA-3799-1
Published 10-04-2024Last modified 04-11-2025
Open JSON

Vulnerability summary

CVE-2024-31309 is a high (CVSS 7.5) Improper Input Validation vulnerability in apache software foundation apache traffic server. EPSS estimates a 94.62% chance of exploitation in the next 30 days, higher than 99.8% of scored vulnerabilities.

Overall risk
49/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
94.62%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-04-2024
    PublishedVulnerability first disclosed.
  2. 04-11-2025
    Last modifiedVulnerability information updated.

Description

HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

94.62%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

0.00 pp

From 94.62% on 18-09-2026

18-09-202618-10-2026
EPSS score
94.62%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • trafficserver< 8.1.10+ds-1~deb11u1 | < 9.2.4+ds-0+deb12u1 | < 8.1.7-0+deb10u4
  • debian_linuxEOL10.0
Apache1 product
Apache software foundation1 product
Fedoraproject1 product
Ubuntu1 product
  • trafficserverAll versions (No fix recorded)

5 vendors · 6 products

References

14 links
Show all 14 references