CVE-2020-26228 json
Cleartext storage of session identifier
published 2020-11-23 5 y ago modified 2026-07-08 4 mo ago also BIT-typo3-2020-26228 , EUVD-2020-1453 , GHSA-954j-f27r-cj52
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 user session identifiers were stored in cleartext - without processing with additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.
Patch / fix
- packagist typo3/cms-core 8.7.38, 9.5.23, 10.4.10
- packagist typo3/cms 8.7.38, 9.5.23, 10.4.10
- bitnami typo3 9.5.23, 10.4.10
- typo3 typo3 9.5.23, 10.4.10
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | typo3/cms-core | >=9.0.0, <9.5.23 >=10.0.0, <10.4.10 >=8.7.0, <8.7.38 |
9.5.23 10.4.10 8.7.38 |
| packagist | typo3/cms | >=10.0.0, <10.4.10 >=9.0.0, <9.5.23 >=8.7.0, <8.7.38 |
10.4.10 9.5.23 8.7.38 |
| bitnami | typo3 | >=9.0.0, <9.5.23 >=10.0.0, <10.4.10 |
9.5.23 10.4.10 |
Affected products
- TYPO3 TYPO3.CMS
Classification
- Weakness
-
- CWE-312 Cleartext Storage of Sensitive Information
References
-
typo3.org
/security/advisory/typo3-core-sa-2020-011
web, vendor-advisory
-
github.com
/TYPO3/TYPO3.CMS/security/advisories/GHSA-954j-f27r-cj52
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-26228
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-26228.yaml
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-26228.yaml
web
Sources
- CVE List CVE-2020-26228
- GitHub Advisory GHSA-954j-f27r-cj52
- NVD CVE-2020-26228
- OSV BIT-typo3-2020-26228
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