CVE-2024-26144: Possible Sensitive Session Information Leak in Active Storage
Vulnerability summary
CVE-2024-26144 is a medium (CVSS 5.3) vulnerability in rails. EPSS estimates a 1.12% chance of exploitation in the next 30 days, higher than 66.1% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2Timeline
- 27-02-2024PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
Description
Rails is a web-application framework. Starting with version 5.2.0, there is a possible sensitive session information leak in Active Storage. By default, Active Storage sends a Set-Cookie header along with the user's session cookie when serving blobs. It also sets Cache-Control to public. Certain proxies may cache the Set-Cookie, leading to an information leak. The vulnerability is fixed in 7.0.8.1 and 6.1.7.7.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- OSV · RubygemsEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
1.12%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 1.13% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- rails< 2:6.1.7.10+dfsg-1~deb12u1 | < 2:7.2.2.1+dfsg-1
Rails1 product
- rails≥ 5.2.0, < 6.1.7.7 | ≥ 7.0.0, < 7.0.8.1
RubyGems1 product
- activestorage≥ 5.2.0, < 6.1.7.7 | ≥ 7.0.0, < 7.0.8.1
Rubyonrails1 product
- rails≥ 5.2.0, < 6.1.7.7 | ≥ 7.0.0, < 7.1.0
Ubuntu1 product
- railsAll versions (No fix recorded)
5 vendors · 5 products
References
13 links- github.com/rails/rails/security/advisories/GHSA-8h22-8cf7-hq6gX Refsource CONFIRMREPORTWEBVendor Advisory
- github.com/rails/rails/commit/723f54566023e91060a67b03353e7c03e7436433X Refsource MISCREPORTWEBPatch
- github.com/rails/rails/commit/78fe149509fac5b05e54187aaaef216fbb5fd0d3X Refsource MISCREPORTWEBPatch
- discuss.rubyonrails.org/t/possible-sensitive-session-information-leak-in-active-storage/84945X Refsource MISCREPORTWEBVendor Advisory
- github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2024-26144.ymlX Refsource MISCREPORTWEBThird Party Advisory
- security.netapp.com/advisory/ntap-20240510-0013/Third Party Advisory
