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CVE-2019-19381

20
FAUCET Score

CVE-2019-19381 describes a Reflected Cross-Site Scripting (XSS) vulnerability in Abacus OAuth Login 2019_01_r4_20191021_0000 prior to the R4 hotfix. This flaw allows an attacker to inject malicious scripts via an error message in the oauth/oauth2/v1/saml/ endpoint. With a CVSS score of 6.1 (Medium), it requires user interaction (UI:R) but can be exploited remotely (AV:N) with low attack complexity (AC:L), potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2019-11-20CPE matchmatch criteria
cpe:2.3:a:abacus:abacus:2019-11-20:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.72%
Probability of exploitation in next 30 days
EPSS Percentile
50.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0072 is in the 56th percentile among its peer group of 26,219 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

compass-security.com / en/research/advisories
Third Party Advisory
compass-security.com / fileadmin/Datein/Research/Advisories/CSNC-2019-024_Abacus_Cross-Site_Scripting_XSS.txt
ExploitThird Party Advisory