Threats / WebPros / CVE-2026-41940
CVE-2026-41940
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-10
WebPros cPanel & WHM and WP2 (WordPress Squared) vulnerability
WebPros cPanel & WHM and WP2 contain an authentication bypass vulnerability allowing unauthenticated remote attackers to gain unauthorized access to hosting control panels.
Verdict
Today item, not a backlog item.
An authentication bypass in the login flow enables attackers to circumvent credential requirements and access administrative interfaces without valid credentials, facilitating unauthorized system compromise and data theft.
CISA KEV Yes · 2026-04-305Ransomware use Flagged5EPSS 0.97927 (verify live)6Exploit Weaponized · public PoC7CVSS 9.33CISA SSVC Exploitation: active · Automatable: yes · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
126 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-30), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.97927 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) · Affected: WebPros, cPanel & WHM and WP2 (WordPress Squared). Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 4.0, set at disclosure.
Weakness (CWE)
Mapped to CWE-306 Missing Authentication — weakness family: Authentication.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 1 day after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module, nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a request that bypasses the authentication mechanism in the login flow to access the control panel without valid credentials.
Business
Attackers gain unauthorized administrative access to hosting infrastructure, enabling lateral movement and persistence across customer environments.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I enumerate hosted websites and databases accessible through the compromised control panel to identify high-value targets.
Business
Customer data, websites, and hosted applications become exposed to theft, modification, or destruction at scale.
3
Lateral reach — past segmentation narrative 3
Attacker
I deploy ransomware payloads across multiple customer accounts and infrastructure to encrypt critical data and demand payment.
Business
Widespread service disruption, financial extortion losses, regulatory fines, and reputational damage from mass customer compromise.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by VulnCheckCNA
Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.
Found an error? Propose a correction.
A correction is a cited counter-claim — it must cite a source,
gets reviewed by a second human, and is never auto-applied. See the
correction convention and our identity
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