CVE-2026-11854

MEDIUMPre-NVD 6.16.1
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.1 from GitHub Security Advisory published 2026-10-28. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: GitHub Security Advisory, a secondary CVSS source
Trending — 5 sources updated this week

Also known asEUVD-2026-112399 (ENISA EUVD) · GHSA-jw6g-mv47-3fhf (GitHub Security Advisories)Source: ENISA EUVD

6.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.1Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (WSO2 LLC) lists WSO2 API Manager versions 3.2.0 up to but not including 3.2.0.480, 3.2.1 up to but not including 3.2.1.99, 4.1.0 up to but not including 4.1.0.265, 4.2.0 up to but not including 4.2.0.205 and 5 more ranges; WSO2 API Control Plane versions 4.5.0 up to but not including 4.5.0.66, 4.6.0 up to but not including 4.6.0.30 and 4.7.0 up to but not including 4.7.0.1; WSO2 Identity Server versions 5.10.0 up to but not including 5.10.0.399, 5.11.0 up to but not including 5.11.0.446, 6.0.0 up to but not including 6.0.0.272, 6.1.0 up to but not including 6.1.0.274 and 3 more ranges as affected. No release containing a fix is confirmed on record.

The authentication endpoint generates an error message that includes reflected data directly from the request without sufficient sanitization or encoding. This allows an attacker to inject malicious scripts that can be executed in the context of a victim's browser.

Successful exploitation enables an attacker to perform actions within the user's browser, such as redirecting the user to a malicious website, modifying the web page's user interface, or retrieving information. However, due to the httpOnly flag on session-related cookies, session hijacking or similar attacks are not possible.

CVSS v3
6.1
EG Score
6.1MEDIUMhigh confidence
EG Risk
27
EG Risk 27/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity61% × 45%
Impact severity (EG Severity): CVSS 6.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0% × 40%
No KEV listing, EG-KEV tier or EPSS when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.1): severity, escalated by confirmed exploitation. This CVE's 6.1 is its impact severity (EG Severity), not escalated.

EG Severity
6.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 28, 2026

Last Modified

October 29, 2026

Vendor Advisories for CVE-2026-11854(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 10× in last 7d / 10× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-10-29 16:29 UTCGHSA enrichmentGHSA-jw6g-mv47-3fhf · GitHub CVSS 6.1
  3. 2026-10-29 04:30 UTCEG score recompute
  4. 2026-10-29 04:29 UTCGHSA enrichmentGHSA-jw6g-mv47-3fhf · GitHub CVSS 6.1
  5. 2026-10-29 02:25 UTCEG score recompute
  6. 2026-10-29 02:25 UTCGHSA enrichmentGHSA-jw6g-mv47-3fhf · GitHub CVSS 6.1
  7. 2026-10-28 20:27 UTCEG score recompute
  8. 2026-10-28 20:01 UTCENISA EUVD ID recordedEUVD-2026-112399 · Source: ENISA EUVD
  9. 2026-10-28 19:23 UTCEG score recomputeFirst assessed: 6.1 MEDIUM
  10. 2026-10-28 19:23 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-11854?
CVE-2026-11854 is a medium-severity vulnerability; its CVE record was published on October 28, 2026. The authentication endpoint generates an error message that includes reflected data directly from the request without sufficient sanitization or encoding. This allows an attacker to inject malicious scripts that can be executed in the context of a victim's browser. Successful exploitation enables…
When was the CVE record for CVE-2026-11854 published?
The CVE record for CVE-2026-11854 was published on October 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 29, 2026; the record at its source may have been updated since.
Is CVE-2026-11854 actively exploited?
CVE-2026-11854 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11854?
CVE-2026-11854 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-11854?
No fix for CVE-2026-11854 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (WSO2 LLC) lists WSO2 API Manager versions 3.2.0 up to but not including 3.2.0.480, 3.2.1 up to but not including 3.2.1.99, 4.1.0 up to but not including 4.1.0.265, 4.2.0 up to but not including 4.2.0.205 and 5 more ranges; WSO2 API Control Plane versions 4.5.0 up to but not including 4.5.0.66, 4.6.0 up to but not including 4.6.0.30 and 4.7.0 up to but not including 4.7.0.1; WSO2 Identity Server versions 5.10.0 up to but not including 5.10.0.399, 5.11.0 up to but not including 5.11.0.446, 6.0.0 up to but not including 6.0.0.272, 6.1.0 up to but not including 6.1.0.274 and 3 more ranges as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-11854 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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