CVE-2026-61875Disclosure

LOWCVSS 8.7 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

luci-app-upnp contains a stored cross-site scripting vulnerability that allows unauthenticated LAN clients to inject JavaScript via UPnP IGD AddPortMapping SOAP requests. Attackers can send malicious HTML in the NewPortMappingDescription field, which miniupnpd stores and luci-app-upnp renders without output encoding, executing the payload when administrators view the UPnP or Status pages.

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1.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

Public PoC is present in monitored signal
3 mentions across 2 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 3 signals
Disclosure: 3 classified signals
Peaked 1d ago at 2 mentions (2026-07-12); latest day: 1
3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d

Signal classification1 categories

Disclosure

3100.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-07-12	2	Disclosure2
2026-07-16	1	Disclosure1

Full discourse3 posts

ThreatAft@ThreatAft87d
Disclosure
🚨 OpenWrt/LuCI 3-CVE Cluster — RCE + XSS in Router Management UI CVE-2026-59260 (8.8) — Samba4 ACL → root RCE CVE-2026-61875 (8.8) — UPnP stored XSS CVE-2026-61876 (8.8) — DHCPv6 hostname stored XSS → http://threataft.com/articles/openwrt-luci-cve-cluster-rce-xss #CyberSecurity #ThreatIntel #OpenWrt #IoTsecurity
Post summary
The post announces three high‑severity CVEs affecting OpenWrt/LuCI, detailing RCE and XSS flaws, and provides a link likely containing further technical information.
0000072
34 followersView on X
Infoflowcloud@infoflowcloud91d
Disclosure
🚨*CVE* CVE-2026-61875 luci-app-upnp contains a stored cross-site scripting vulnerability that allows unauthenticated LAN clients to inject JavaScript via UPnP IGD AddPortMapping SOAP reque… https://www.cve.org/CVERecord?id=CVE-2026-61875 ----- Traducción: CVE-2026-61875 luc… http://infoflow.cloud`
Post summary
The tweet announces a stored XSS vulnerability (CVE-2026‑61875) in luci‑app‑upnp, detailing how an unauthenticated LAN client can inject JavaScript through a UPnP IGD AddPortMapping SOAP request.
0000043
92 followersView on X
CVE@CVEnew91d
Disclosure
CVE-2026-61875 luci-app-upnp contains a stored cross-site scripting vulnerability that allows unauthenticated LAN clients to inject JavaScript via UPnP IGD AddPortMapping SOAP reque… https://www.cve.org/CVERecord?id=CVE-2026-61875
Post summary
A stored XSS flaw in luci-app-upnp (CVE-2026-61875) permits unauthenticated LAN clients to inject JavaScript through UPnP IGD AddPortMapping SOAP requests.
00000765
57.8K followersView on X

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