CRITICAL
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
Published Feb 3, 2018
9.3
CRITICALCVSS 4.0
EPSS 2.61%
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
No data.
Configuration 1
- < 1.2.1
Configuration 2
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
9.3 CRITICAL GHSA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality High
Vulnerable System Integrity High
Vulnerable System Availability None
Subsequent System Confidentiality None
Subsequent System Integrity None
Subsequent System Availability None
No CVSS v3.1 score for this CVE.
9.1 CRITICAL NVD
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
6.4 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.61% 0.02609
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02609
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.61% (0.02609) | 84.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.66% (0.02659) | 83.67th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.55% (0.00552) | 66.07th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.43% (0.00434) | 75.43th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.43% (0.00434) | 73.88th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.43% (0.00434) | 71.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.64% (0.00639) | 75.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.93% (0.01935) | 48.26th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.93% (0.01935) | 0.00th | v1 |
Weaknesses (1)
References (9)
- https://bugs.debian.org/889450 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/advisories/GHSA-hxf9-7h4c-f5jv Advisory
- https://github.com/anymail/django-anymail/commit/c07998304b4a31df4c61deddcb03d3607a04691b x_refsource_CONFIRMPatch
- https://github.com/anymail/django-anymail/commit/db586ede1fbb41dce21310ea28ae15a1cf1286c5 x_refsource_CONFIRMPatch
- https://github.com/anymail/django-anymail/releases/tag/v1.2.1 x_refsource_CONFIRMRelease Notes
- https://github.com/anymail/django-anymail/releases/tag/v1.3 x_refsource_CONFIRMRelease Notes
- https://github.com/pypa/advisory-database/tree/main/vulns/django-anymail/PYSEC-2018-7.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2018-6596
- https://www.debian.org/security/2018/dsa-4107 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugs.debian.org/889450 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/advisories/GHSA-hxf9-7h4c-f5jv | Advisory | |
| https://github.com/anymail/django-anymail/commit/c07998304b4a31df4c61deddcb03d3607a04691b | x_refsource_CONFIRMPatch | |
| https://github.com/anymail/django-anymail/commit/db586ede1fbb41dce21310ea28ae15a1cf1286c5 | x_refsource_CONFIRMPatch | |
| https://github.com/anymail/django-anymail/releases/tag/v1.2.1 | x_refsource_CONFIRMRelease Notes | |
| https://github.com/anymail/django-anymail/releases/tag/v1.3 | x_refsource_CONFIRMRelease Notes | |
| https://github.com/pypa/advisory-database/tree/main/vulns/django-anymail/PYSEC-2018-7.yaml | ||
| https://nvd.nist.gov/vuln/detail/CVE-2018-6596 | ||
| https://www.debian.org/security/2018/dsa-4107 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 3, 2018
Updated Aug 5, 2024
Reserved Feb 3, 2018
Link CVE-2018-6596
CISA Vulnrichment
GHSA-HXF9-7H4C-F5JV Updated n/a