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 8 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
35added in the last 30 days
456new WordPress flaws this week
390,714entries in the database

8 results

  • Apr 29, 2021md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown documentCVE-2021-30027 · Other software · Md4c Project · reported by MITREMedium 5.5

    md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown document.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 30, 2020md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to trigger use of uninitialized memory, and cause a denial of service (e.g., assertion failure) viaCVE-2020-26148 · Other software · Md4c Project · reported by MITREHigh 7.5

    md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to trigger use of uninitialized memory, and cause a denial of service (e.g., assertion failure) via a malformed Markdown document.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 11, 2018md_build_attribute in md4c.c in md4c 0.2.6 allows remote attackers to cause a denial of service (Segmentation fault and application crash) or possibly have unspCVE-2018-12112 · Other software · Md4c Project · reported by MITREHigh 7.8

    md_build_attribute in md4c.c in md4c 0.2.6 allows remote attackers to cause a denial of service (Segmentation fault and application crash) or possibly have unspecified other impact via a crafted file.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 11, 2018md4c 0.2.6 has a NULL pointer dereference in the function md_process_line in md4c.c, related to ctx->current_block.CVE-2018-12102 · Other software · Md4c Project · reported by MITREMedium 5.5

    md4c 0.2.6 has a NULL pointer dereference in the function md_process_line in md4c.c, related to ctx->current_block.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 29, 2018md_is_link_reference_definition_helper in md4c 0.2.5 has a heap-based buffer over-read because md_is_link_label mishandles loop termination.CVE-2018-11547 · Other software · Md4c Project · reported by MITRECritical 9.8

    md_is_link_reference_definition_helper in md4c 0.2.5 has a heap-based buffer over-read because md_is_link_label mishandles loop termination.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 29, 2018md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.CVE-2018-11546 · Other software · Md4c Project · reported by MITRECritical 9.8

    md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 29, 2018md4c 0.2.5 has a heap-based buffer overflow in md_merge_lines because md_is_link_label mishandles the case of a link label composed solely of backslash escapes.CVE-2018-11545 · Other software · Md4c Project · reported by MITRECritical 9.8

    md4c 0.2.5 has a heap-based buffer overflow in md_merge_lines because md_is_link_label mishandles the case of a link label composed solely of backslash escapes.

    Product
    Md4c
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 29, 2018md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits.CVE-2018-11536 · Other software · Md4c Project · reported by MITRECritical 9.8

    md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits.

    Product
    Md4c
    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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