CVE-2021-3509: redhat ceph_storage
Vulnerability summary
CVE-2021-3509 is a medium (CVSS 6.1) vulnerability in redhat ceph_storage. EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 77.2% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 6Timeline
- 26-05-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in Red Hat Ceph Storage 4, in the Dashboard component. In response to CVE-2020-27839, the JWT token was moved from localStorage to an httpOnly cookie. However, token cookies are used in the body of the HTTP response for the documentation, which again makes it available to XSS.The greatest threat to the system is for confidentiality, integrity, and availability.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · AlpineEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.70%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.70% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundCeph
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine2 products
- ceph< 16.2.4-r0
- ceph16< 16.2.4-r0
Debian1 product
- ceph< 14.2.21-1
Redhat1 product
- ceph_storage4.0
Ubuntu1 product
- ceph< 15.2.12-0ubuntu0.20.04.1
4 vendors · 5 products
References
12 links- github.com/ceph/ceph/commit/adda853e64bdba1288d46bc7d462d23d8f2f10caX Refsource MISCPatchThird Party Advisory
- github.com/ceph/ceph/commit/7a1ca8d372da3b6a4fc3d221a0e5f72d1d61c27bX Refsource MISCPatchThird Party Advisory
- github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27X Refsource MISCPatchThird Party Advisory
