CVE-2020-11063: Observable Response Discrepancy in TYPO3 CMS
Vulnerability summary
CVE-2020-11063 is a medium (CVSS 4.3) Observable Response Discrepancy vulnerability in typo3. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.6% of scored vulnerabilities.
Not severe (CVSS 3.7, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 13-05-2020PublishedVulnerability first disclosed.
- 03-12-2024Last modifiedVulnerability information updated.
Description
In TYPO3 CMS versions 10.4.0 and 10.4.1, it has been discovered that time-based attacks can be used with the password reset functionality for backend users. This allows an attacker to mount user enumeration based on email addresses assigned to backend user accounts. This has been fixed in 10.4.2.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
1.22%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.22% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-204Observable Response DiscrepancyThe product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.
- CWE-203Observable DiscrepancyThe product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
1 vendor · 2 products
References
3 links- github.com/TYPO3/typo3/security/advisories/GHSA-347x-877p-hcwxX Refsource CONFIRM
- github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-347x-877p-hcwxX Refsource CONFIRMX TransferredThird Party Advisory