CVE-2021-32678: fedoraproject fedora
Vulnerability summary
CVE-2021-32678 is a medium (CVSS 5.3) vulnerability in fedoraproject fedora. EPSS estimates a 1.37% chance of exploitation in the next 30 days, higher than 71.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 12-07-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (`OCSController`) using the `@BruteForceProtection` annotation. Risk depends on the installed applications on the Nextcloud Server, but could range from bypassing authentication ratelimits or spamming other Nextcloud users. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. No workarounds aside from upgrading are known to exist.
CVSS metrics
3 scores · 2 sources · 2 versions- CVE.orgCNA3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
EPSS trend
Probability
1.37%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
0.00 pp
From 1.37% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-799Improper Control of Interaction FrequencyThe product does not properly limit the number or frequency of interactions that it has with an actor, such as the number of incoming requests.
- CWE-307Improper Restriction of Excessive Authentication AttemptsThe product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
Affected systems
Nextcloud2 products
- nextcloud_server< 19.0.13 | ≥ 20.0.0, < 20.0.11 | ≥ 21.0.0, < 21.0.3
- security-advisories< 19.0.13 | ≥ 20.0.0, < 20.0.11 | ≥ 21.0.0, < 21.0.3
Fedoraproject1 product
- fedoraEOL33 | 34
2 vendors · 3 products
References
6 links- github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3gmf-g74jX Refsource CONFIRMThird Party Advisory