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 3 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.

1,762exploited flaws on CISA’s list
34added in the last 30 days
333new WordPress flaws this week
390,007entries in the database

7 results

  • Aug 13, 2026Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.CVE-2026-56859 · Other software · Go standard library · reported by security@golang.orgHigh 7.5

    Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.

    Product
    encoding/xml
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 10, 2022Uncontrolled recursion in Unmarshal in encoding/xml before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via unmarshallinCVE-2022-30633 · Other software · Go standard library · reported by security@golang.orgHigh 7.5

    Uncontrolled recursion in Unmarshal in encoding/xml before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via unmarshalling an XML document into a Go struct which has a nested field that uses the 'any' field tag.

    Product
    encoding/xml
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 10, 2022Uncontrolled recursion in Decoder.Skip in encoding/xml before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via a deeply CVE-2022-28131 · Other software · Go standard library · reported by security@golang.orgHigh 7.5

    Uncontrolled recursion in Decoder.Skip in encoding/xml before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via a deeply nested XML document.

    Product
    encoding/xml
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 10, 2021encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of anCVE-2021-27918 · Other software · Golang · reported by MITREHigh 7.5

    encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.

    Product
    GO
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 14, 2020The encoding/xml package in Go (all versions) does not correctly preserve the semantics of element namespace prefixes during tokenization round-trips, which allCVE-2020-29511 · Other software · Golang · reported by responsibledisclosure@mattermost.comCritical 9.8

    The encoding/xml package in Go (all versions) does not correctly preserve the semantics of element namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

    Product
    Go
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 14, 2020The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives during tokenization round-trips, which allows aCVE-2020-29510 · Other software · Golang · reported by responsibledisclosure@mattermost.comCritical 9.8

    The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

    Product
    Go
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 14, 2020The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which aCVE-2020-29509 · Other software · Golang · reported by responsibledisclosure@mattermost.comCritical 9.8

    The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

    Product
    Go
    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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