CVE-2019-12422

Apache Shiro before 1.4.2, when using the default "remember me" configuration, cookies could be susceptible to a padding attack.

Published: 2019-11-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-12422 is rated Moderate Risk (62.8/100): CVSS High severity, with high exploitation likelihood (EPSS 54.90%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-12422

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-15 56.42% 54.90% -1.53%
2 2025-11-21 51.84% 56.42% +4.58%
3 2025-11-18 — 51.84% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-12422

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-12422

GitHub Security Advisory for CVE-2019-12422

GHSA-r679-m633-g7wc · Severity: high · Ecosystem: maven — Improper input validation in Apache Shiro

OS Trackers for CVE-2019-12422

vendor priority summary link
debian low CVE-2019-12422 low priority: Debian including 1 source packages (shiro), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): open 4. https://security-tracker.debian.org/tracker/CVE-2019-12422
redhat medium — https://access.redhat.com/security/cve/CVE-2019-12422
ubuntu medium CVE-2019-12422 medium priority: Ubuntu including 1 source packages (shiro), 16 status rows across 16 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): ignored 14, DNE 1, released 1. https://ubuntu.com/security/CVE-2019-12422

Affected software / configurations for CVE-2019-12422

Vendor Product Version Raw CPE
apache shiro < 1.4.2 cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*

References for CVE-2019-12422

cvelogic Threat Intelligence