SB20260604100 - Multiple vulnerabilities in Django
Published: June 4, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2026-6873)
CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the "django.http.HttpRequest.get_signed_cookie" uses a non-injective salt derivation. A remote user can use a cookie in a context different from the one where it was signed.
2) Cleartext transmission of sensitive information (CVE-ID: CVE-2026-7666)
CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to the "django.core.mail.backends.smtp.EmailBackend" fails to prevent reuse of a partially-initialized connection after a failed "STARTTLS" handshake. A remote attacker can gain access to sensitive data.
3) Improper Handling of Case Sensitivity (CVE-ID: CVE-2026-8404)
CWE-ID: CWE-178 - Improper Handling of Case Sensitivity
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to "django.middleware.cache.UpdateCacheMiddleware" does not match "Cache-Control" response directives case-insensitively. A remote attacker can gain access to sensitive information on the system.
4) Use of cache containing sensitive information (CVE-ID: CVE-2026-35193)
CWE-ID: CWE-524 - Use of Cache Containing Sensitive Information
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to compromise the target device.
The vulnerability exists due to use of cache containing sensitive information in "UpdateCacheMiddleware". A remote attacker can gain access to sensitive information on the target system.
5) Incomplete Comparison with Missing Factors (CVE-ID: CVE-2026-48587)
CWE-ID: CWE-1023 - Incomplete Comparison with Missing Factors
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to "django.utils.cache.has_vary_header()" does not strip leading or trailing whitespace from "Vary" response header values before comparison. A remote attacker can read cached responses on the system.
Remediation
Install update from vendor's website.