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 5 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
344new WordPress flaws this week
390,080entries in the database

10 results

  • Oct 15, 2026catdoc through 0.95 contains an out-of-bounds read vulnerability in copy_unicode_string() in src/xlsparse.c that allows attackers to read past buffers via an unCVE-2026-111127 · Other software · catdoc · reported by VulnCheckMedium 6.9

    catdoc through 0.95 contains an out-of-bounds read vulnerability in copy_unicode_string() in src/xlsparse.c that allows attackers to read past buffers via an unchecked string character count. Attackers can supply a crafted .xls file declaring 0xFFFF two-byte characters in LABEL, STRING, or SST records to disclose adjacent memory through xls2csv output or crash the process.

    Product
    catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 15, 2026catdoc through 0.95 contains an out-of-bounds read vulnerability in the MULRK record handler of process_item() in src/xlsparse.c that allows attackers to read pCVE-2026-111126 · Other software · catdoc · reported by VulnCheckMedium 6.9

    catdoc through 0.95 contains an out-of-bounds read vulnerability in the MULRK record handler of process_item() in src/xlsparse.c that allows attackers to read past the static rec buffer via a crafted end column. Attackers can supply a crafted .xls workbook or BIFF stream with a large endcol to xls2csv to disclose adjacent process memory as CSV cells or crash the process.

    Product
    catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 2, 2025An integer underflow vulnerability exists in the OLE Document DIFAT Parser functionality of catdoc 0.95.CVE-2024-54028 · Other software · catdoc · reported by talos-cna@cisco.comHigh 8.4

    An integer underflow vulnerability exists in the OLE Document DIFAT Parser functionality of catdoc 0.95. A specially crafted malformed file can lead to heap-based memory corruption. An attacker can provide a malicious file to trigger this vulnerability.

    Product
    catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 2, 2025An integer overflow vulnerability exists in the OLE Document File Allocation Table Parser functionality of catdoc 0.95.CVE-2024-52035 · Other software · catdoc · reported by talos-cna@cisco.comHigh 8.4

    An integer overflow vulnerability exists in the OLE Document File Allocation Table Parser functionality of catdoc 0.95. A specially crafted malformed file can lead to heap-based memory corruption. An attacker can provide a malicious file to trigger this vulnerability.

    Product
    catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 25, 2023Catdoc v0.95 was discovered to contain a NULL pointer dereference via the component xls2csv at src/xlsparse.c.CVE-2023-46345 · Other software · Fossies · reported by MITREHigh 7.5

    Catdoc v0.95 was discovered to contain a NULL pointer dereference via the component xls2csv at src/xlsparse.c.

    Product
    Catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 1, 2023Catdoc v0.95 was discovered to contain a NULL pointer dereference via the component xls2csv at src/fileutil.c.CVE-2023-41633 · Other software · Fossies · reported by MITREMedium 5.5

    Catdoc v0.95 was discovered to contain a NULL pointer dereference via the component xls2csv at src/fileutil.c.

    Product
    Catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 9, 2023Catdoc v0.95 was discovered to contain a global buffer overflow via the function process_file at /src/reader.c.CVE-2023-31979 · Other software · Fossies · reported by MITREHigh 7.8

    Catdoc v0.95 was discovered to contain a global buffer overflow via the function process_file at /src/reader.c.

    Product
    Catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jan 30, 2019In libdoc through 2019-01-28, doc2text in catdoc.c has a NULL pointer dereference.CVE-2019-7233 · Other software · Libdoc Project · reported by MITREHigh 8.8

    In libdoc through 2019-01-28, doc2text in catdoc.c has a NULL pointer dereference.

    Product
    Libdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 8, 2017The ole_init function in ole.c in catdoc 0.95 allows remote attackers to cause a denial of service (heap-based buffer underflow and application crash) or possibCVE-2017-11110 · Other software · Fossies · reported by MITREHigh 7.8

    The ole_init function in ole.c in catdoc 0.95 allows remote attackers to cause a denial of service (heap-based buffer underflow and application crash) or possibly have unspecified other impact via a crafted file, i.e., data is written to memory addresses before the beginning of the tmpBuf buffer.

    Product
    Catdoc
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 18, 2004msxlsview.sh in xlsview for catdoc 0.91 and earlier allows local users to overwrite arbitrary files via a symlink attack on predictable temporary file names ("wCVE-2003-0193 · Other software · Catdoc · reported by MITRELow 2.1

    msxlsview.sh in xlsview for catdoc 0.91 and earlier allows local users to overwrite arbitrary files via a symlink attack on predictable temporary file names ("word$$.html").

    Product
    Catdoc
    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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