Issues

• FreshClam and cvdupdate both receive HTTP 403 from database.clamav.net on ClamAV 1.5.4 across two independent networks

  Cisco-Talos/clamav#1851 · Filter by author pejman-shahabi opened on Oct 7, 2026

• FreshClam 1.4.6: database CDN returns HTTP 403 for server IP 89.111.154.168

  Cisco-Talos/clamav#1849 · Filter by author yushap opened on Oct 6, 2026

• OLE2 Excel workbook: error from an embedded stream is dropped and the file is reported OK (1.5.4; 1.4.6 alerted)

  Cisco-Talos/clamav#1848 · Filter by author RuudvanReenen opened on Oct 6, 2026

• FreshClam CDN 403 after cooldown on Debian 13 Timeweb VM: eligibility and supported package path

  Cisco-Talos/clamav#1847 · Filter by author AkimPavlov opened on Oct 5, 2026
  1

• ClamAV 1.5.4 on macOS: official libfreshclam update returns CDN 403 after cooldown

  Cisco-Talos/clamav#1846 · Filter by author qcmv72b58z-q8 opened on Oct 3, 2026

• FreshClam 1.5.4 blocked by CDN after cooldown - possible Geo-IP misclassification

  Cisco-Talos/clamav#1844 · Filter by author younir321 opened on Oct 3, 2026

• Variant analysis: 1 unfixed sibling safety gap in clamav

  Cisco-Talos/clamav#1842 · Filter by author x4evexnol opened on Sep 28, 2026

• PNG/JPEG/TIFF: malware in image overlay not detected (regression since 1.0.x)

  Cisco-Talos/clamav#1838 · Filter by author norajam opened on Sep 24, 2026

• FreshClam 1.4.5 receives persistent CDN 403 after cooldown

  Cisco-Talos/clamav#1835 · Filter by author dmitriykustov-glitch opened on Sep 23, 2026
  1

• ClamAV misreads PDF encryption values that use short octal escapes

  Cisco-Talos/clamav#1833 · Filter by author josh-gen1 opened on Sep 18, 2026

• Blocked by CDN (17)

  Cisco-Talos/clamav#1823 · Filter by author hanwalt opened on Sep 13, 2026
  6

• Feature request: resumable full scans (checkpoint/resume for interrupted scans)

  Cisco-Talos/clamav#1821 · Filter by author callynsky opened on Sep 9, 2026

• On-access scanning silently misses writes from other mount namespaces

  Cisco-Talos/clamav#1820 · Filter by author AdzerKI opened on Sep 7, 2026

• Windows: 1.4.5 reintroduces RAM disk scan failure fixed in 0.103.1 (regression of 478fe1b3)

  Cisco-Talos/clamav#1817 · Filter by author tomikapc opened on Sep 3, 2026

• fuzz: check the result of fopen() in clamav_scanfile_fuzzer

  Cisco-Talos/clamav#1811 · Filter by author Namron2000 opened on Aug 23, 2026

• OnAccessIncludePath recursive folder watch bug

  Cisco-Talos/clamav#1797 · Filter by author EmanueleIannuzzi opened on Aug 13, 2026

• Would you take a parser behind CL_TYPE_AI_MODEL?

  Cisco-Talos/clamav#1790 · Filter by author 7etsuo opened on Aug 4, 2026
  1

• PERFT_ELF/PERFT_MACHO are never registered in perf_events[], and the resulting event error strings are leaked by cli_events_free()

  Cisco-Talos/clamav#1787 · Filter by author CrJyyy opened on Aug 2, 2026

• ClamAV 1.5.3 fails to initialize MD5 under Ubuntu 24.04 FIPS, causing EICAR detection failure

  Cisco-Talos/clamav#1786 · Filter by author danixtech opened on Jul 31, 2026
  13

• PCREMaxFileSize (default 100MB) silently skips PCRE signature evaluation — verdict stays "OK", and AlertExceedsMax does NOT cover this case

  Cisco-Talos/clamav#1785 · Filter by author juancarlosgd opened on Jul 30, 2026

• FreshClam 1.5.3 blocked by CDN on new Ubuntu 24.04 VPS

  Cisco-Talos/clamav#1779 · Filter by author SamuelBarnabas opened on Jul 26, 2026
  1

• Unable to pass stream data to clamdscan using process substitution

  🐛bug🥺feature request
  Cisco-Talos/clamav#1775 · Filter by author Pamplemousse opened on Jul 22, 2026
  1

• PDF module: FlateDecode-compressed /EmbeddedFile attachment content not extracted for scanning ("Small data (0 bytes)")

  Cisco-Talos/clamav#1773 · Filter by author sushim-g opened on Jul 18, 2026

• Completion of error handling

  Cisco-Talos/clamav#1768 · Filter by author elfring opened on Jul 11, 2026

• Remove unnecessary null pointer checks

  Cisco-Talos/clamav#1767 · Filter by author elfring opened on Jul 11, 2026
  2