Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS
Published Jul 29, 2020
8.8
HIGHCVSS 3.1
EPSS 2.23%
Description
In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.20, and greater than or equal to 10.0.0 and less than 10.4.6, it has been discovered that an internal verification mechanism can be used to generate arbitrary checksums. This allows to inject arbitrary data having a valid cryptographic message authentication code (HMAC-SHA1) and can lead to various attack chains including potential privilege escalation, insecure deserialization & remote code execution. The overall severity of this vulnerability is high based on mentioned attack chains and the requirement of having a valid backend user session (authenticated). This has been patched in versions 9.5.20 and 10.4.6.
Affected products
-
- Version >= 10.0.0, 10.4.6StatusaffectedConstraints-
- Version >= 9.0.0, < 9.5.20StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.23% (0.02229) | 82.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.23% (0.02229) | 80.38th | v5 (v2026.06.15) |
| Mar 17, 2025 | 3.25% (0.03249) | 86.27th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.32% (0.00318) | 71.34th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00318) | 69.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.32% (0.00318) | 65.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.57% (0.04571) | 88.92th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.57% (0.04571) | 87.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 52.14% (0.52138) | 98.35th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.47% (0.09469) | 87.07th | v1 |
| Jan 6, 2022 | 9.47% (0.09469) | 86.91th | v1 |
| Jan 5, 2022 | 2.28% (0.02278) | 78.73th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.28% (0.02278) | 0.00th | v1 |
References (9)
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-15098.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-15098.yaml
- https://github.com/TYPO3/TYPO3.CMS/commit/85d3e70dff35a99ef53f4b561114acfa9e5c47e1 x_refsource_MISCBroken Link
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-m5vr-3m74-jwxp x_refsource_CONFIRMThird Party Advisory
- https://github.com/advisories/GHSA-m5vr-3m74-jwxp Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-5091
- https://nvd.nist.gov/vuln/detail/CVE-2020-15098
- https://typo3.org/security/advisory/typo3-core-sa-2016-013 x_refsource_MISCVendor Advisory
- https://typo3.org/security/advisory/typo3-core-sa-2020-008 x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-15098.yaml | ||
| https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-15098.yaml | ||
| https://github.com/TYPO3/TYPO3.CMS/commit/85d3e70dff35a99ef53f4b561114acfa9e5c47e1 | x_refsource_MISCBroken Link | |
| https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-m5vr-3m74-jwxp | x_refsource_CONFIRMThird Party Advisory | |
| https://github.com/advisories/GHSA-m5vr-3m74-jwxp | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-5091 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2020-15098 | ||
| https://typo3.org/security/advisory/typo3-core-sa-2016-013 | x_refsource_MISCVendor Advisory | |
| https://typo3.org/security/advisory/typo3-core-sa-2020-008 | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.