Security Vulnerabilities
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop when cloning or duplicating a crafted cyclic DictionaryObject. Clone traversal checked generated destination references rather than the original source references, allowing some source cycles to evade the visited-object check. This issue is fixed in version 6.21.4.
CVSS Score
7.1
EPSS Score
0.003
Published
2026-10-29
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.
CVSS Score
7.1
EPSS Score
0.003
Published
2026-10-29
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can take excessive time to retrieve page labels from a crafted PDF containing a flat page-label number tree with many ranges. The page_labels property resolves each page independently and repeatedly scans the same /Nums array from the beginning, causing work to grow with both the page count and the number of label ranges. This issue is fixed in version 6.21.3.
CVSS Score
7.1
EPSS Score
0.002
Published
2026-10-29
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used asn1.fromDer(), BIT STRING decoding, maxDepth to process the relevant input or security decision. node-forge decoded ASN.1 stored inside BIT STRING values without consistently applying the configured maxDepth limit and recursively retained copies at each nesting level. Crafted DER containing nested BIT STRINGs could cause excessive recursion, CPU use, and quadratic memory consumption during asn1.fromDer(). This issue is fixed in version 1.4.1.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-10-29
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used forge.tls.createConnection(), TLS record processing, process() to process the relevant input or security decision. node-forge processed received TLS records recursively, consuming one JavaScript stack frame per record in a single input chunk. A remote peer could send thousands of small records together and exhaust the call stack, causing an uncaught exception and denial of service. This issue is fixed in version 1.4.1.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-10-29
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
CVSS Score
8.8
EPSS Score
0.006
Published
2026-10-29
Use after free in Microsoft Edge for iOS allows an unauthorized attacker to execute code over a network.
CVSS Score
8.8
EPSS Score
0.006
Published
2026-10-29
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
CVSS Score
7.4
EPSS Score
0.005
Published
2026-10-29
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVSS Score
8.8
EPSS Score
0.006
Published
2026-10-29
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVSS Score
8.8
EPSS Score
0.006
Published
2026-10-29