Critical severity9.8NVD Advisory· Published Jun 19, 2020· Updated Jun 17, 2026
CVE-2020-8165
CVE-2020-8165
Description
A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
activesupportRubyGems | >= 5.0.0, < 5.2.4.3 | 5.2.4.3 |
activesupportRubyGems | >= 6.0.0, < 6.0.3.1 | 6.0.3.1 |
Affected products
22- rails/railsdescription
- ghsa-coords21 versionspkg:gem/activesupportpkg:rpm/opensuse/rmt-server&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/rmt-server&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/rmt-server&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/rubygem-activesupport-5_1&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/rubygem-activesupport-5_1&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/rubygem-activesupport-6.0&distro=openSUSE%20Tumbleweedpkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP1pkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2pkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/rmt-server&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/rubygem-activesupport-4_2&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/rubygem-activesupport-4_2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/rubygem-activesupport-4_2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/rubygem-activesupport-5_1&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015pkg:rpm/suse/rubygem-activesupport-5_1&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP1pkg:rpm/suse/rubygem-activesupport-5_1&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2
>= 5.0.0, < 5.2.4.3+ 20 more
- (no CPE)range: >= 5.0.0, < 5.2.4.3
- (no CPE)range: < 2.6.5-lp151.2.18.2
- (no CPE)range: < 2.6.5-lp152.2.3.1
- (no CPE)range: < 2.6.13-1.1
- (no CPE)range: < 5.1.4-lp151.3.3.1
- (no CPE)range: < 5.1.4-lp152.4.3.1
- (no CPE)range: < 6.0.4.4-1.1
- (no CPE)range: < 2.6.5-3.34.1
- (no CPE)range: < 2.6.5-3.34.1
- (no CPE)range: < 2.6.5-3.18.1
- (no CPE)range: < 2.6.5-3.3.1
- (no CPE)range: < 2.6.5-3.18.1
- (no CPE)range: < 2.6.5-3.3.1
- (no CPE)range: < 2.6.5-3.34.1
- (no CPE)range: < 2.6.5-3.34.1
- (no CPE)range: < 4.2.9-7.9.1
- (no CPE)range: < 4.2.9-7.9.1
- (no CPE)range: < 4.2.9-7.9.1
- (no CPE)range: < 5.1.4-3.3.1
- (no CPE)range: < 5.1.4-3.3.1
- (no CPE)range: < 5.1.4-3.3.1
Patches
Vulnerability mechanics
References
15- groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1cnvdMailing ListPatchThird Party AdvisoryWEB
- hackerone.com/reports/413388nvdExploitPatchThird Party AdvisoryWEB
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.htmlnvdMailing ListThird Party AdvisoryWEB
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.htmlnvdMailing ListThird Party AdvisoryWEB
- github.com/advisories/GHSA-2p68-f74v-9wc6ghsaADVISORY
- lists.debian.org/debian-lts-announce/2020/06/msg00022.htmlnvdMailing ListThird Party AdvisoryWEB
- lists.debian.org/debian-lts-announce/2020/07/msg00013.htmlnvdMailing ListThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2020-8165ghsaADVISORY
- weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/nvdVendor Advisory
- www.debian.org/security/2020/dsa-4766nvdThird Party AdvisoryWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2020-8165.ymlghsaWEB
- groups.google.com/forum/ghsaWEB
- security.netapp.com/advisory/ntap-20250509-0002ghsaWEB
- weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-releasedghsaWEB
- security.netapp.com/advisory/ntap-20250509-0002/nvd
News mentions
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