CVE-2026-42491General

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

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0.0/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

2 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 2 signals
General: 2 classified signals
Peaked 1d ago at 1 mentions (2026-07-14); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification1 categories

General

2100.0%

Referenced assets1 URL

By indicator

https://www.openwall.com/lists/oss-security/2026/07/14/12

Full discourse2 posts

Open Source Security mailing list@oss_security87d
General
Xen Security Advisory 498 v2 (CVE-2026-42491) - XAPI: Missing TLS verification in some SDKs https://www.openwall.com/lists/oss-security/2026/07/14/12 MITM on the network communication between a program using one of the affected SDKs and a host running XAPI may [...] hijack [...] Read or tamper with [...]
Post summary
The advisory highlights a missing TLS verification issue in Xen SDKs that could allow MITM attacks; however, no PoC, exploit code, patch, or evidence of active exploitation is provided.
00050559
4.7K followersView on X
IntraSystems, LLC@Intra_Access91d
General
MEDIUM SEVERITY | Citrix XenServer SDK CVE-2026-42491 allows attackers to intercept HTTPS requests and impersonate privileged admins. • XenCenter → 2026.4.0+ • SDK → 26.15.0+ Need help? servicedesk@intrasystems.com | 866.202.0020 #Citrix #XenServer #CVE #PatchNow
Post summary
The post alerts on CVE‑2026‑42491's medium‑severity flaw in Citrix XenServer SDK, noting that attackers could intercept HTTPS traffic to impersonate admins; no PoC, exploit, patch, or active exploitation details are provided.
0000049
305 followersView on X

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