CVE-2023-52240

The Kantega SAML SSO OIDC Kerberos Single Sign-on apps before 6.20.0 for Atlassian products allow XSS if SAML POST Binding is enabled. This affects 4.4.2 through 4.14.8 before 4.14.9, 5.0.0 through 5.11.4 before 5.11.5, and 6.0.0 through 6.19.0 before 6.20.0. The full product names are Kantega SAML SSO OIDC Kerberos Single Sign-on for Jira Data Center & Server (Kantega SSO Enterprise), Kantega SAML SSO OIDC Kerberos Single Sign-on for Confluence Data Center & Server (Kantega SSO Enterprise), Kantega SAML SSO OIDC Kerberos Single Sign-on for Bitbucket Data Center & Server (Kantega SSO Enterprise), Kantega SAML SSO OIDC Kerberos Single Sign-on for Bamboo Data Center & Server (Kantega SSO Enterprise), and Kantega SAML SSO OIDC Kerberos Single Sign-on for FeCru Server (Kantega SSO Enterprise). (Here, FeCru refers to the Atlassian Fisheye and Crucible products running together.)

Published: 2023-12-29 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-52240 is rated Low Risk (37.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.50%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2023-52240

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 2026-06-15 0.39% 0.50% +0.11%
2 2026-01-16 0.29% 0.39% +0.09%
3 2025-11-21 — 0.29% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-52240

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]

Weakness enumeration for CVE-2023-52240

Affected software / configurations for CVE-2023-52240

Vendor Product Version Raw CPE
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 4.4.2, < 4.14.9 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:bamboo:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 4.4.2, < 4.14.9 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:bitbucket:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 4.4.2, < 4.14.9 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:confluence:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 4.4.2, < 4.14.9 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:fecru:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 4.4.2, < 4.14.9 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:jira:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 5.0.0, < 5.11.5 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:bamboo:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 5.0.0, < 5.11.5 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:bitbucket:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 5.0.0, < 5.11.5 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:confluence:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 5.0.0, < 5.11.5 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:jira:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 6.0.0, < 6.20.0 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:bamboo:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 6.0.0, < 6.20.0 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:bitbucket:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 6.0.0, < 6.20.0 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:confluence:*:*
kantega-sso kantega_saml_sso_oidc_kerberos_single_sign-on >= 6.0.0, < 6.20.0 cpe:2.3:a:kantega-sso:kantega_saml_sso_oidc_kerberos_single_sign-on:*:*:*:*:*:jira:*:*

References for CVE-2023-52240

URL Tags
https://kantega-sso.atlassian.net/wiki/spaces/KSE/pages/1226473473/Security+Vulnerability+HTML+injection+Cross-site+scripting+in+SAML+POST+binding+Kantega+SSO+Enterprise Vendor Advisory
https://marketplace.atlassian.com/apps/1211923/kantega-saml-sso-oidc-kerberos-single-sign-on-for-jira?hosting=datacenter&tab=versions Product
https://marketplace.atlassian.com/apps/1212126/kantega-saml-sso-oidc-kerberos-single-sign-on-for-confluence?hosting=datacenter&tab=overview Product
https://marketplace.atlassian.com/apps/1213019/kantega-saml-sso-oidc-kerberos-single-sign-on-for-bitbucket?hosting=datacenter&tab=overview Product
https://marketplace.atlassian.com/apps/1215262/kantega-saml-sso-oidc-kerberos-single-sign-on-for-bamboo?hosting=datacenter&tab=overview Product
https://marketplace.atlassian.com/apps/1215263/kantega-saml-sso-oidc-kerberos-single-sign-on-for-fecru?hosting=server&tab=overview Product
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