CVE-2026-35192Network attack vector

Session theft via missing cookie cache variation

Published May 5, 2026 · Updated May 5, 2026

Session fixation in Django 5.2 before 5.2.14 and 6.0 before 6.0.5 allows remote attackers to steal sessions through cached public pages. SessionMiddleware.process_response sets a session cookie when SESSION_SAVE_EVERY_REQUEST is enabled but fails to add Cookie to the Vary header when the session was not accessed or modified. Exploitation requires the nondefault setting, a shared cache that stores the public response, and a user who visits the cached page.

CVSS severity2.3
Low
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Session fixation in Django 5.2 before 5.2.14 and 6.0 before 6.0.5 allows remote attackers to steal sessions through cached public pages. SessionMiddleware.process_response sets a session cookie when SESSION_SAVE_EVERY_REQUEST is enabled but fails to add Cookie to the Vary header when the session was not accessed or modified. Exploitation requires the nondefault setting, a shared cache that stores the public response, and a user who visits the cached page.

The record

CVE
CVE-2026-35192
Published
May 5, 2026
Updated
May 5, 2026
Vendor
Django Software Foundation
Product
Django
Classifications
CWE-539, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.2 <5.2.14
  2. Affected versionversion=6.0 <6.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Django Software Foundation · Djangoversion=5.2 <5.2.14; version=6.0 <6.0.5

Published CVSS scores

2.3Django Software FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-539Use of Persistent Cookies Containing Sensitive Information
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo