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CVE-2019-12422

29
FAUCET Score

CVE-2019-12422 describes a high-severity padding oracle vulnerability in Apache Shiro versions prior to 1.4.2, specifically impacting its default "remember me" cookie configuration. This flaw allows an unauthenticated attacker to achieve high integrity impact with low attack complexity, potentially leading to unauthorized access or privilege escalation. Despite its high CVSS score of 7.5 and high FAUCET Risk Score of 97/100, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.2CPE matchmatch criteria
cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.10%
Probability of exploitation in next 30 days
EPSS Percentile
94.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0910 is in the 92nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

mavenpatch availablevia ghsa
Product: org.apache.shiro:shiro-coreFixed in: 1.4.2
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.6.0Fixed in: shiro-core
View patch
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: opendaylight
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 14 (Rocky)Fixed in: opendaylight

Vendor Advisories (2)

mavenGHSA-r679-m633-g7wchigh

Improper input validation in Apache Shiro

Feb 4, 2020
redhatCVE-2019-12422Moderate

shiro: Cookie padding oracle vulnerability with default configuration

Nov 18, 2019

References

lists.apache.org / thread.html/c9db14cfebfb8e74205884ed2bf2e2b30790ce24b7dde9191c82572c%40%3Cdev.shiro.apache.org%3E
lists.apache.org / thread.html/r2d2612c034ab21a3a19d2132d47d3e4aa70105008dd58af62b653040%40%3Ccommits.shiro.apache.org%3E