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CVE
CVE-2026-46511
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the /system/api/connectionSettings endpoint allows an authenticated attacker to perform a complete cross-tenant account takeover. The API dynamically leaks the active session's authentication tokens (including the jwt, user_token, site_token, and appstore_token) into a global JavaScript variable (window.appSettings).
An attacker can exploit the XSS vulnerability to force a victim's browser to silently fetch their specific connection settings, extract the tokens, and exfiltrate them to an attacker-controlled webhook. Version 26.0.0 patches the issue.
EPSS 0.00072
Monitor
- ⚠ NVD has not scored this CVE yet - manual triage required (common for recent CVEs)
Sigma rules0
YARA rules0
Look this up elsewhere - one-click external pivots
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How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2026-46511, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked.
EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal.
CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score.
Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits.
PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
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ATT&CK techniques
13Techniques this CVE enables - linked via CWECAPECATT&CK. High◆ = named directly in ATT&CK or Nuclei templates.
T1021 · Remote Services T1021.002 · SMB/Windows Admin Shares T1078 · Valid Accounts T1110.004 · Credential Stuffing T1114.002 · Remote Email Collection T1133 · External Remote Services T1543 · Create or Modify System Process T1550.002 · Pass the Hash T1550.003 · Pass the Ticket T1552.004 · Private Keys T1558 · Steal or Forge Kerberos Tickets T1558.003 · Kerberoasting T1059 · Command and Scripting Interpreter
▤ Build a SIEM detection for these techniques
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CAPEC attack patterns
12Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
CAPEC-CAPEC-102 · Session Sidejacking CAPEC-CAPEC-209 · XSS Using MIME Type Mismatch CAPEC-CAPEC-474 · Signature Spoofing by Key Theft CAPEC-CAPEC-50 · Password Recovery Exploitation CAPEC-CAPEC-509 · Kerberoasting CAPEC-CAPEC-551 · Modify Existing Service CAPEC-CAPEC-555 · Remote Services with Stolen Credentials CAPEC-CAPEC-560 · Use of Known Domain Credentials CAPEC-CAPEC-561 · Windows Admin Shares with Stolen Credentials CAPEC-CAPEC-588 · DOM-Based XSS CAPEC-CAPEC-591 · Reflected XSS CAPEC-CAPEC-592 · Stored XSS
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Weakness Classification
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Affected Packages
1Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
npm
@haxtheweb/haxcms-nodejs
HIGH
fixed in 26.0.0
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Scoring & Timeline
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources
1Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.