[NEU] [mittel] OPNsense: Mehrere Schwachstellen ermöglichen Cross-Site Scripting

mediumCVE-2026-49131 CVE-2026-49132

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in OPNsense ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.

Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-08-04
Exploitation: Not in CISA KEV at last sync

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2635

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-491310.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.
Low exploitation riskCVE-2026-491320.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-49131	coverage & exploitation status	NVD · CVE.org
CVE-2026-49132	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for OPNsense

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-49132: OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authen…nvd · 2026-08-03
mediumCVE-2026-49131: OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authen…nvd · 2026-08-03
medium[NEW] [medium] OPNsense: Multiple vulnerabilitiescert-bund · 2026-07-21
high[NEW] [high] OPNsense: Multiple vulnerabilitiescert-bund · 2026-07-02