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CVE-2018-6596

28
FAUCET Score

CVE-2018-6596 describes a critical timing attack vulnerability in Anymail (django-anymail) versions prior to 1.2.1, specifically within the webhooks/base.py component. This flaw allows remote attackers to bypass the WEBHOOK_AUTHORIZATION secret, enabling them to post arbitrary email tracking events. With a CVSS score of 9.1 (CRITICAL), the vulnerability is easily exploitable over the network with low attack complexity, leading to high confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.1CPE matchmatch criteria
cpe:2.3:a:django-anymail_project:django-anymail:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.61%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0261 is in the 74th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: django-anymailFixed in: 1.2.1

Vendor Advisories (1)

pipGHSA-hxf9-7h4c-f5jvcritical

Django-Anymail prone to a timing attack

Jul 12, 2018

References

bugs.debian.org / 889450
Issue TrackingPatchThird Party Advisory
github.com / anymail/django-anymail/commit/c07998304b4a31df4c61deddcb03d3607a04691b
Patch
github.com / anymail/django-anymail/commit/db586ede1fbb41dce21310ea28ae15a1cf1286c5
Patch
github.com / anymail/django-anymail/releases/tag/v1.2.1
Release Notes
github.com / anymail/django-anymail/releases/tag/v1.3
Release Notes
debian.org / security/2018/dsa-4107
Third Party Advisory