A certain algorithm in Ruby on Rails 2.1.0 through 2.2.2, and 2.3.x before 2.3.4, leaks information about the complexity of message-digest signature verification in the cookie store, which might allow remote attackers to forge a digest via multiple attempts
Published Sep 8, 2009
5.0
MEDIUMCVSS 2.0
EPSS 2.23%
Description
A certain algorithm in Ruby on Rails 2.1.0 through 2.2.2, and 2.3.x before 2.3.4, leaks information about the complexity of message-digest signature verification in the cookie store, which might allow remote attackers to forge a digest via multiple attempts.
Affected products
No data.
- 2.1.0
- 2.1.1
- 2.1.2
- 2.2.0
- 2.2.1
- 2.2.2
- 2.3.2
- 2.3.3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.23% (0.02232) | 82.16th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.23% (0.02232) | 80.41th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.56% (0.00556) | 65.51th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.78% (0.01776) | 71.42th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.60% (0.00601) | 67.64th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.56% (0.00556) | 78.35th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.56% (0.00556) | 76.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00556) | 74.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (16)
- http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00004.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/36600 third-party-advisoryx_refsource_SECUNIA
- http://weblog.rubyonrails.org/2009/9/4/timing-weakness-in-ruby-on-rails x_refsource_CONFIRMPatch
- http://www.debian.org/security/2011/dsa-2260 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/37427 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2009/2544 vdb-entryx_refsource_VUPENVendor Advisory
- https://github.com/advisories/GHSA-fg9w-g6m4-557j Advisory
- https://github.com/rails/rails/commit/1f07a89c5946910fc28ea5ccd1da6af8a0f972a0
- https://github.com/rails/rails/commit/674f780d59a5a7ec0301755d43a7b277a3ad2978
- https://github.com/rails/rails/commit/d460c9a25560f43e7c3789abadf7b455053eb686
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2009-3086.yml
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2009-3086.yml
- https://nvd.nist.gov/vuln/detail/CVE-2009-3086
- https://web.archive.org/web/20090906010200/http://www.vupen.com/english/advisories/2009/2544
- https://web.archive.org/web/20090907001716/http://secunia.com/advisories/36600
- https://web.archive.org/web/20200229150042/http://www.securityfocus.com/bid/37427
Change history (0)
No recorded changes yet.