A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the SAML feature and access sensitive, browser-based information. This vulnerability is due to insufficient input validation of multiple HTTP parameters. An attacker could exploit this vulnerability by persuading a user to access a malicious link. A successful exploit could allow the attacker to conduct a reflected XSS attack through an affected device.
CVE-2026-20102
Score 6.1 from GitHub Security Advisory published 2026-03-04. NVD baseline CVSS 6.1; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EG Risk
- 28(Track)EG Risk 28/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity61% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 19%
- KEV
- Not listed
Published
March 4, 2026
Last Modified
August 11, 2026
Advisory Details (1)
Auto-updated Aug 4, 2026Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software SAML Reflected Cross-Site Scripting Vulnerability
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-LktTrwZPVendor Advisories for CVE-2026-20102(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 23× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 179 total refreshes for this CVE.
- 2026-09-18 19:27 UTCEPSS rescore
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- 2026-08-18 13:48 UTCEPSS rescore
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- 2026-08-14 08:34 UTCGHSA enrichment
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- 2026-08-11 19:57 UTCGHSA enrichment
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- 2026-08-10 07:56 UTCGHSA enrichment
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- 2026-08-07 20:03 UTCGHSA enrichment
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- 2026-08-06 02:40 UTCGHSA enrichment
- 2026-08-05 19:17 UTCEPSS rescore
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- 2026-08-04 02:35 UTCEG score recompute
- 2026-08-04 02:35 UTCGHSA enrichment
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- 2026-08-02 18:58 UTCEG score recompute
- 2026-08-02 18:58 UTCGHSA enrichment
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- 2026-07-23 03:06 UTCEG score recompute
- 2026-07-22 14:08 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2026-20102?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-20102
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