What’s Vulnerable › Vulnerabilities

CVE-2018-6596

• Severity: critical (CVSS 9.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-03 · updated 2026-06-17
• Weakness: CWE-200

Description

webhooks/base.py in Anymail (aka django-anymail) before 1.2.1 is prone to a timing attack vulnerability on the WEBHOOK_AUTHORIZATION secret, which allows remote attackers to post arbitrary e-mail tracking events.

Affected products

• Debian Linux: 9.0
• Django-Anymail Project Django-Anymail: before 1.2.1 — fixed in 1.2.1

How to fix

Upgrade to a fixed version: Django-Anymail Project Django-Anymail 1.2.1. Check the vendor advisory for mitigations.

References

• https://bugs.debian.org/889450
• https://github.com/anymail/django-anymail/commit/c07998304b4a31df4c61deddcb03d3607a04691b
• https://github.com/anymail/django-anymail/commit/db586ede1fbb41dce21310ea28ae15a1cf1286c5
• https://github.com/anymail/django-anymail/releases/tag/v1.2.1
• https://github.com/anymail/django-anymail/releases/tag/v1.3
• https://www.debian.org/security/2018/dsa-4107
• https://bugs.debian.org/889450
• https://github.com/anymail/django-anymail/commit/c07998304b4a31df4c61deddcb03d3607a04691b
• https://github.com/anymail/django-anymail/commit/db586ede1fbb41dce21310ea28ae15a1cf1286c5
• https://github.com/anymail/django-anymail/releases/tag/v1.2.1
• https://github.com/anymail/django-anymail/releases/tag/v1.3
• https://www.debian.org/security/2018/dsa-4107

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