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.
14 results
Oct 20, 2026HarfBuzz from 8.0.0 through 14.6.0 contains a NULL pointer dereference vulnerability in the experimental WebAssembly shaper host imports buffer_set_contents, faCVE-2026-113680 · Other software · harfbuzz · reported by VulnCheckMedium 6.8
HarfBuzz from 8.0.0 through 14.6.0 contains a NULL pointer dereference vulnerability in the experimental WebAssembly shaper host imports buffer_set_contents, face_create, and font_set_coords. Attackers can supply a crafted font whose embedded wasm module passes out-of-range addresses with non-zero lengths, crashing any application that shapes text with the font.
- Product
- harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026HarfBuzz 8.0.0 through 14.6.0 contains an out-of-bounds write vulnerability in the experimental WebAssembly shaper because the font_glyph_to_string import has aCVE-2026-113679 · Other software · harfbuzz · reported by VulnCheckHigh 7.3
HarfBuzz 8.0.0 through 14.6.0 contains an out-of-bounds write vulnerability in the experimental WebAssembly shaper because the font_glyph_to_string import has a wrong WAMR signature. Attackers can supply a crafted font whose wasm module places the output buffer near linear memory's end, writing glyph-name bytes into host memory to crash or corrupt applications.
- Product
- harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 18, 2026HarfBuzz::Shaper versions before 0.032 for Perl contains a bundled library with a null pointer dereference vulnerability.CVE-2026-0943 · Other software · JV · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eHigh 7.5
HarfBuzz::Shaper versions before 0.032 for Perl contains a bundled library with a null pointer dereference vulnerability. Versions before 0.032 contain HarfBuzz 8.4.0 or earlier bundled as hb_src.tar.gz in the source tarball, which is affected by CVE-2026-22693.
- Product
- HarfBuzz::Shaper
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.redhat.commetacpan.org
Jan 10, 2026HarfBuzz is a text shaping engine.CVE-2026-22693 · Other software · harfbuzz · reported by GitHubMedium 5.3
HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault. This issue has been patched in version 12.3.0.
- Product
- harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 27, 2024HarfBuzz is a text shaping engine.CVE-2024-56732 · Other software · harfbuzz · reported by GitHubCritical 9.3
HarfBuzz is a text shaping engine. Starting with 8.5.0 through 10.0.1, there is a heap-based buffer overflow in the hb_cairo_glyphs_from_buffer function.
- Product
- harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 4, 2023hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2) growth via consecutive marks during the process of looking back for base gCVE-2023-25193 · Other software · Harfbuzz Project · reported by MITREHigh 7.5
hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2) growth via consecutive marks during the process of looking back for base glyphs when attaching marks.
- Product
- Harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordchromium.googlesource.comgithub.com
Jun 23, 2022An integer overflow in the component hb-ot-shape-fallback.cc of Harfbuzz v4.3.0 allows attackers to cause a Denial of Service (DoS) via unspecified vectors.CVE-2022-33068 · Other software · Harfbuzz Project · reported by MITREMedium 5.5
An integer overflow in the component hb-ot-shape-fallback.cc of Harfbuzz v4.3.0 allows attackers to cause a Denial of Service (DoS) via unspecified vectors.
- Product
- Harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 31, 2021HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_set_copy).CVE-2021-45931 · Other software · Harfbuzz Project · reported by MITREMedium 6.5
HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_set_copy).
- Product
- Harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugs.chromium.orggithub.com
Nov 15, 2018HarfBuzz before 1.0.4 allows remote attackers to cause a denial of service (invalid read of two bytes and application crash) because of GPOS and GSUB table mishCVE-2015-9274 · Other software · Harfbuzz Project · reported by MITREMedium 6.5
HarfBuzz before 1.0.4 allows remote attackers to cause a denial of service (invalid read of two bytes and application crash) because of GPOS and GSUB table mishandling, related to hb-ot-layout-gpos-table.hh, hb-ot-layout-gsub-table.hh, and hb-ot-layout-gsubgpos-private.hh.
- Product
- Harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 19, 2016hb-ot-layout-gpos-table.hh in HarfBuzz before 1.0.5 allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other iCVE-2015-8947 · Other software · Harfbuzz Project · reported by MITREHigh 7.6
hb-ot-layout-gpos-table.hh in HarfBuzz before 1.0.5 allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted data, a different vulnerability than CVE-2016-2052.
- Product
- Harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orgrhn.redhat.com
Jan 25, 2016Multiple unspecified vulnerabilities in HarfBuzz before 1.0.6, as used in Google Chrome before 48.0.2564.82, allow attackers to cause a denial of service or posCVE-2016-2052 · Other software · Harfbuzz Project · reported by chrome-cve-admin@google.comHigh 7.6
Multiple unspecified vulnerabilities in HarfBuzz before 1.0.6, as used in Google Chrome before 48.0.2564.82, allow attackers to cause a denial of service or possibly have other impact via crafted data, as demonstrated by a buffer over-read resulting from an inverted length check in hb-ot-font.cc, a different issue than CVE-2015-8947.
- Product
- Harfbuzz
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgooglechromereleases.blogspot.comlists.opensuse.org
May 20, 2015platform/fonts/shaping/HarfBuzzShaper.cpp in Blink, as used in Google Chrome before 43.0.2357.65, does not initialize a certain width field, which allows remoteCVE-2015-1262 · Computers, phones & browsers · Google · reported by chrome-cve-admin@google.comHigh 7.5
platform/fonts/shaping/HarfBuzzShaper.cpp in Blink, as used in Google Chrome before 43.0.2357.65, does not initialize a certain width field, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted Unicode text.
- Product
- Chrome
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgooglechromereleases.blogspot.comlists.opensuse.org
Jun 15, 2012Heap-based buffer overflow in the Lookup_MarkMarkPos function in the HarfBuzz module (harfbuzz-gpos.c), as used by Qt before 4.7.4 and Pango, allows remote attaCVE-2011-3193 · Other software · Gnome · reported by Red HatHigh 9.3
Heap-based buffer overflow in the Lookup_MarkMarkPos function in the HarfBuzz module (harfbuzz-gpos.c), as used by Qt before 4.7.4 and Pango, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted font file.
- Product
- Pango
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcgit.freedesktop.orgcgit.freedesktop.org
Mar 7, 2011The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeeCVE-2011-0064 · Other software · Gnome · reported by MITREMedium 6.8
The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.
- Product
- Pango
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcgit.freedesktop.orglists.fedoraproject.org
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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