VulnerabilityModified
CVE-2021-28963
Shibboleth Service Provider before 3.2.1 allows content injection because template generation uses attacker-controlled parameters.
MEDIUM 5.3EPSS 1.31%
Does this matter?
Lower severity and a low EPSS score (1.31%). Track it; it rarely justifies an emergency change on its own.
Description
Shibboleth Service Provider before 3.2.1 allows content injection because template generation uses attacker-controlled parameters.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 1.31% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- shibboleth/service provider · debian/debian linux
- Source
- cve@mitre.org
EPSS 1.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugs.debian.org/985405Mailing List, Third Party Advisory
- https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=d1dbebfadc1bdb824fea63843c4c38fa69e54379
- https://issues.shibboleth.net/jira/browse/SSPCPP-922Issue Tracking, Patch, Vendor Advisory
- https://shibboleth.net/community/advisories/secadv_20210317.txtVendor Advisory
- https://www.debian.org/security/2021/dsa-4872Mailing List, Third Party Advisory
- https://bugs.debian.org/985405Mailing List, Third Party Advisory
- https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=d1dbebfadc1bdb824fea63843c4c38fa69e54379
- https://issues.shibboleth.net/jira/browse/SSPCPP-922Issue Tracking, Patch, Vendor Advisory
- https://shibboleth.net/community/advisories/secadv_20210317.txtVendor Advisory
- https://www.debian.org/security/2021/dsa-4872Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.