vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-71190

HIGH
8.7
CVSS Score
Published: August 5, 2026 at 04:54 AM UTC
Updated: October 24, 2026 at 03:10 PM UTC
1 product affected across 1 vendorSwift

Using Swift by OpenStack?

Get instant alerts when new vulnerabilities affect Swift - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.7
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The "qdtext" pattern (?:[^"]|\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in the proxy worker. A payload of 32 backslash-character pairs exceeds 30 seconds of CPU time. No authentication is required. Repeated requests can exhaust all proxy worker threads, resulting in a complete denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Swift· Openstack
90%
1.9.1 ≤ v < 2.35.42.36.0 ≤ v < 2.36.32.37.0 ≤ v < 2.37.31.9.12.36.02.37.02.38.0
Affected range stops below 2.35.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.36.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.37.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Issue Tracking
Source: cverecord
https://launchpad.net/bugs/2158771
Vendor AdvisoryMailing List
Source: cverecord
https://openwall.com/lists/oss-security/2026/07/28/27
Vendor Advisory
Source: cverecord
https://security.openstack.org/ossa/OSSA-2026-031.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/08/05/19

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHmitre
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-1333

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card