Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 1 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,764exploited flaws on CISA’s list
36added in the last 30 days
479new WordPress flaws this week
390,525entries in the database

6 results

  • Mar 23, 2026Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces.CVE-2026-31851 · Other software · Nexxt Solutions · reported by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cHigh 7.7

    Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction.

    Product
    Nebula 300+
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 23, 2026Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, inCVE-2026-31850 · Other software · Nexxt Solutions · reported by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cMedium 6.8

    Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information.

    Product
    Nebula 300+
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 23, 2026Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools andCVE-2026-31849 · Other software · Nexxt Solutions · reported by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cHigh 7.2

    Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious web requests that are executed in the context of an authenticated administrator’s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings.

    Product
    Nebula 300+
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 23, 2026Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combiCVE-2026-31848 · Other software · Nexxt Solutions · reported by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cHigh 8.7

    Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication.

    Product
    Nebula 300+
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 23, 2026Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a TelneCVE-2026-31847 · Other software · Nexxt Solutions · reported by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cHigh 8.5

    Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an authenticated attacker can activate a Telnet service on port 23.

    Product
    Nebula 300+
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 23, 2026Missing authentication in the /goform/ate endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows an adjacent unauthenticated attackCVE-2026-31846 · Other software · Nexxt Solutions · reported by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cHigh 7.1

    Missing authentication in the /goform/ate endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows an adjacent unauthenticated attacker to retrieve sensitive device information, including the administrator password. An attacker can decode this value to obtain valid administrative credentials and authenticate to the device.

    Product
    Nebula 300+ / Tenda F3 V2.0 Firmware
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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