Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/351426?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/351426?format=api", "vulnerability_id": "VCID-g5u9-khw6-4kgn", "summary": "An integer overflow existed in the wolfCrypt CMAC implementation, that could be exploited to forge CMAC tags. The function wc_CmacUpdate used the guard `if (cmac->totalSz != 0)` to skip XOR-chaining on the first block (where digest is all-zeros and the XOR is a no-op). However, totalSz is word32 and wraps to zero after 2^28 block flushes (4 GiB), causing the guard to erroneously discard the live CBC-MAC chain state. Any two messages sharing a common suffix beyond the 4 GiB mark then produce identical CMAC tags, enabling a zero-work prefix-substitution forgery. The fix removes the guard, making the XOR unconditional; the no-op property on the first block is preserved because digest is zero-initialized by wc_InitCmac_ex.", "aliases": [ { "alias": "CVE-2026-5477" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/1076509?format=api", "purl": "pkg:deb/debian/wolfssl@5.9.1-0.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/wolfssl@5.9.1-0.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1076143?format=api", "purl": "pkg:deb/debian/wolfssl@5.9.1-0.1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/wolfssl@5.9.1-0.1%3Fdistro=trixie" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/994671?format=api", "purl": "pkg:deb/debian/wolfssl@4.6.0%2Bp1-0%2Bdeb11u2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-15fz-hhc7-kyaa" }, { "vulnerability": "VCID-1u3q-52yd-1bhe" }, { "vulnerability": "VCID-24mg-wn6a-6bew" }, { "vulnerability": "VCID-24s5-d6jt-4kfe" }, { "vulnerability": "VCID-2ry7-trrg-gfdk" }, { "vulnerability": "VCID-3gve-u4f4-bkht" }, { "vulnerability": "VCID-47nm-nte5-27fm" }, { "vulnerability": "VCID-4zda-zrq6-hbc8" }, { "vulnerability": "VCID-4zyq-af27-yqa4" }, { "vulnerability": "VCID-6n4g-us9a-53g4" }, { "vulnerability": "VCID-6v8z-cfax-zqbh" }, { "vulnerability": "VCID-75y2-h9uk-n3a6" }, { "vulnerability": "VCID-7xbp-qkvv-bqgm" }, { "vulnerability": "VCID-8735-ectc-j7a3" }, { "vulnerability": "VCID-9hdy-aqa2-w3bd" }, { "vulnerability": "VCID-9jb1-k32z-w7gw" }, { "vulnerability": "VCID-9jpj-dfsf-qkce" }, { "vulnerability": "VCID-9jw2-3v9v-ruap" }, { "vulnerability": "VCID-9kev-ferz-5bhr" }, { "vulnerability": "VCID-9x14-2t7m-1kbm" }, { "vulnerability": "VCID-bfap-h1d9-33dj" }, { "vulnerability": "VCID-cum2-vp1j-syfc" }, { "vulnerability": "VCID-cv4y-g4un-ckd4" }, { "vulnerability": "VCID-cxhw-3w24-dkes" }, { "vulnerability": "VCID-dpu2-4w42-kygw" }, { "vulnerability": "VCID-euma-vgqx-sbau" }, { "vulnerability": "VCID-f4gq-hqcp-dqe2" }, { "vulnerability": "VCID-f57c-kamk-3bct" }, { "vulnerability": "VCID-f5kd-yqz2-nkcb" }, { "vulnerability": "VCID-fmtp-x6y7-83g1" }, { "vulnerability": "VCID-g5u9-khw6-4kgn" }, { "vulnerability": "VCID-gcfd-w8je-kqfm" }, { "vulnerability": "VCID-gdur-h588-vbb6" }, { "vulnerability": "VCID-gmdj-a1ys-tqc2" }, { "vulnerability": "VCID-gtdh-mytb-t3fh" }, { "vulnerability": "VCID-h6na-nxxq-5yg9" }, { "vulnerability": "VCID-hdbf-118z-2yec" }, { "vulnerability": "VCID-hk8r-kk4v-1fa7" }, { "vulnerability": "VCID-jc3b-m4ud-n7fw" }, { "vulnerability": "VCID-jvnf-vh29-ufdh" }, { "vulnerability": "VCID-jxf4-y1au-5bhw" }, { "vulnerability": "VCID-khur-3ax7-9fhb" }, { "vulnerability": "VCID-n64w-nq6a-m7bv" }, { "vulnerability": "VCID-n6uz-fe7m-uqhk" }, { "vulnerability": "VCID-njbj-f91t-b7f4" }, { "vulnerability": "VCID-nqhj-d7uw-43hd" }, { "vulnerability": "VCID-srmp-3tvp-9uhv" }, { "vulnerability": "VCID-su8x-6n42-n3d5" }, { "vulnerability": "VCID-u24a-2khf-uyba" }, { "vulnerability": "VCID-u55w-unmd-97cm" }, { "vulnerability": "VCID-udcq-enxt-wyf1" }, { "vulnerability": "VCID-ugd8-9xzt-xbdz" }, { "vulnerability": "VCID-uvht-9bt9-hfbb" }, { "vulnerability": "VCID-v3m6-zajw-bfhb" }, { "vulnerability": "VCID-vugd-2jfz-23b5" }, { "vulnerability": "VCID-x3uy-7crx-2kae" }, { "vulnerability": "VCID-xfgd-4hs3-vygk" }, { "vulnerability": "VCID-xuyn-pjpb-g7du" }, { "vulnerability": "VCID-xxkx-w5pc-5uap" }, { "vulnerability": "VCID-zhf4-y8v8-gubn" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/wolfssl@4.6.0%252Bp1-0%252Bdeb11u2" }, { "url": "http://public2.vulnerablecode.io/api/packages/942885?format=api", "purl": "pkg:deb/debian/wolfssl@4.6.0%2Bp1-0%2Bdeb11u2?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-15fz-hhc7-kyaa" }, { "vulnerability": "VCID-1u3q-52yd-1bhe" }, { "vulnerability": "VCID-24mg-wn6a-6bew" }, { "vulnerability": "VCID-24s5-d6jt-4kfe" }, { "vulnerability": "VCID-2ry7-trrg-gfdk" }, { "vulnerability": "VCID-3gve-u4f4-bkht" }, { "vulnerability": "VCID-47nm-nte5-27fm" }, { "vulnerability": "VCID-4zda-zrq6-hbc8" }, { "vulnerability": "VCID-4zyq-af27-yqa4" }, { "vulnerability": "VCID-6n4g-us9a-53g4" }, { "vulnerability": "VCID-6v8z-cfax-zqbh" }, { "vulnerability": "VCID-75y2-h9uk-n3a6" }, { "vulnerability": "VCID-7xbp-qkvv-bqgm" }, { "vulnerability": "VCID-8735-ectc-j7a3" }, { "vulnerability": "VCID-9hdy-aqa2-w3bd" }, { "vulnerability": "VCID-9jb1-k32z-w7gw" }, { "vulnerability": "VCID-9jpj-dfsf-qkce" }, { "vulnerability": "VCID-9jw2-3v9v-ruap" }, { "vulnerability": "VCID-9kev-ferz-5bhr" }, { "vulnerability": "VCID-9x14-2t7m-1kbm" }, { "vulnerability": "VCID-bfap-h1d9-33dj" }, { "vulnerability": "VCID-cum2-vp1j-syfc" }, { "vulnerability": "VCID-cv4y-g4un-ckd4" }, { "vulnerability": "VCID-cxhw-3w24-dkes" }, { "vulnerability": "VCID-dpu2-4w42-kygw" }, { "vulnerability": "VCID-euma-vgqx-sbau" }, { "vulnerability": "VCID-f4gq-hqcp-dqe2" }, { "vulnerability": "VCID-f57c-kamk-3bct" }, { "vulnerability": "VCID-f5kd-yqz2-nkcb" }, { "vulnerability": "VCID-fmtp-x6y7-83g1" }, { "vulnerability": "VCID-g5u9-khw6-4kgn" }, { "vulnerability": "VCID-gcfd-w8je-kqfm" }, { "vulnerability": "VCID-gdur-h588-vbb6" }, { "vulnerability": "VCID-gmdj-a1ys-tqc2" }, { "vulnerability": "VCID-gtdh-mytb-t3fh" }, { "vulnerability": "VCID-h6na-nxxq-5yg9" }, { "vulnerability": "VCID-hdbf-118z-2yec" }, { "vulnerability": "VCID-hk8r-kk4v-1fa7" }, { "vulnerability": "VCID-jc3b-m4ud-n7fw" }, { "vulnerability": "VCID-jvnf-vh29-ufdh" }, { "vulnerability": "VCID-jxf4-y1au-5bhw" }, { "vulnerability": "VCID-khur-3ax7-9fhb" }, { "vulnerability": "VCID-n64w-nq6a-m7bv" }, { "vulnerability": "VCID-n6uz-fe7m-uqhk" }, { "vulnerability": "VCID-njbj-f91t-b7f4" }, { "vulnerability": "VCID-nqhj-d7uw-43hd" }, { "vulnerability": "VCID-srmp-3tvp-9uhv" }, { "vulnerability": "VCID-su8x-6n42-n3d5" }, { "vulnerability": "VCID-u24a-2khf-uyba" }, { "vulnerability": "VCID-u55w-unmd-97cm" }, { "vulnerability": "VCID-udcq-enxt-wyf1" }, { "vulnerability": "VCID-ugd8-9xzt-xbdz" }, { "vulnerability": "VCID-uvht-9bt9-hfbb" }, { "vulnerability": "VCID-v3m6-zajw-bfhb" }, { "vulnerability": "VCID-vugd-2jfz-23b5" }, { "vulnerability": "VCID-x3uy-7crx-2kae" }, { "vulnerability": "VCID-xfgd-4hs3-vygk" }, { "vulnerability": "VCID-xuyn-pjpb-g7du" }, { "vulnerability": "VCID-xxkx-w5pc-5uap" }, { "vulnerability": "VCID-zhf4-y8v8-gubn" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/wolfssl@4.6.0%252Bp1-0%252Bdeb11u2%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/942883?format=api", "purl": "pkg:deb/debian/wolfssl@5.5.4-2%2Bdeb12u2?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-15fz-hhc7-kyaa" }, { "vulnerability": "VCID-1u3q-52yd-1bhe" }, { "vulnerability": "VCID-24mg-wn6a-6bew" }, { "vulnerability": "VCID-24s5-d6jt-4kfe" }, { "vulnerability": "VCID-2ry7-trrg-gfdk" }, { "vulnerability": "VCID-3gve-u4f4-bkht" }, { "vulnerability": "VCID-47nm-nte5-27fm" }, { "vulnerability": "VCID-4zda-zrq6-hbc8" }, { "vulnerability": "VCID-4zyq-af27-yqa4" }, { "vulnerability": "VCID-6v8z-cfax-zqbh" }, { "vulnerability": "VCID-75y2-h9uk-n3a6" }, { "vulnerability": "VCID-7xbp-qkvv-bqgm" }, { "vulnerability": "VCID-8735-ectc-j7a3" }, { "vulnerability": "VCID-9hdy-aqa2-w3bd" }, { "vulnerability": "VCID-9jb1-k32z-w7gw" }, { "vulnerability": "VCID-9jpj-dfsf-qkce" }, { "vulnerability": "VCID-9jw2-3v9v-ruap" }, { "vulnerability": "VCID-9kev-ferz-5bhr" }, { "vulnerability": "VCID-9x14-2t7m-1kbm" }, { "vulnerability": "VCID-bfap-h1d9-33dj" }, { "vulnerability": "VCID-cv4y-g4un-ckd4" }, { "vulnerability": "VCID-cxhw-3w24-dkes" }, { "vulnerability": "VCID-dpu2-4w42-kygw" }, { "vulnerability": "VCID-euma-vgqx-sbau" }, { "vulnerability": "VCID-f57c-kamk-3bct" }, { "vulnerability": "VCID-f5kd-yqz2-nkcb" }, { "vulnerability": "VCID-fmtp-x6y7-83g1" }, { "vulnerability": "VCID-g5u9-khw6-4kgn" }, { "vulnerability": "VCID-gcfd-w8je-kqfm" }, { "vulnerability": "VCID-gdur-h588-vbb6" }, { "vulnerability": "VCID-gmdj-a1ys-tqc2" }, { "vulnerability": "VCID-gtdh-mytb-t3fh" }, { "vulnerability": "VCID-h6na-nxxq-5yg9" }, { "vulnerability": "VCID-hdbf-118z-2yec" }, { "vulnerability": "VCID-hk8r-kk4v-1fa7" }, { "vulnerability": "VCID-jc3b-m4ud-n7fw" }, { "vulnerability": "VCID-jvnf-vh29-ufdh" }, { "vulnerability": "VCID-jxf4-y1au-5bhw" }, { "vulnerability": "VCID-khur-3ax7-9fhb" }, { "vulnerability": "VCID-n64w-nq6a-m7bv" }, { "vulnerability": "VCID-n6uz-fe7m-uqhk" }, { "vulnerability": "VCID-njbj-f91t-b7f4" }, { "vulnerability": "VCID-nqhj-d7uw-43hd" }, { "vulnerability": "VCID-srmp-3tvp-9uhv" }, { "vulnerability": "VCID-su8x-6n42-n3d5" }, { "vulnerability": "VCID-u24a-2khf-uyba" }, { "vulnerability": "VCID-u55w-unmd-97cm" }, { "vulnerability": "VCID-udcq-enxt-wyf1" }, { "vulnerability": "VCID-ugd8-9xzt-xbdz" }, { "vulnerability": "VCID-uvht-9bt9-hfbb" }, { "vulnerability": "VCID-v3m6-zajw-bfhb" }, { "vulnerability": "VCID-vugd-2jfz-23b5" }, { "vulnerability": "VCID-x3uy-7crx-2kae" }, { "vulnerability": "VCID-xfgd-4hs3-vygk" }, { "vulnerability": "VCID-xuyn-pjpb-g7du" }, { "vulnerability": "VCID-xxkx-w5pc-5uap" }, { "vulnerability": "VCID-zhf4-y8v8-gubn" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/wolfssl@5.5.4-2%252Bdeb12u2%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/994672?format=api", "purl": "pkg:deb/debian/wolfssl@5.5.4-2%2Bdeb12u2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-15fz-hhc7-kyaa" }, { "vulnerability": "VCID-1u3q-52yd-1bhe" }, { "vulnerability": "VCID-24mg-wn6a-6bew" }, { "vulnerability": "VCID-24s5-d6jt-4kfe" }, { "vulnerability": "VCID-2ry7-trrg-gfdk" }, { "vulnerability": "VCID-3gve-u4f4-bkht" }, { "vulnerability": "VCID-47nm-nte5-27fm" }, { "vulnerability": "VCID-4zda-zrq6-hbc8" }, { "vulnerability": "VCID-4zyq-af27-yqa4" }, { "vulnerability": "VCID-6v8z-cfax-zqbh" }, { "vulnerability": "VCID-75y2-h9uk-n3a6" }, { "vulnerability": "VCID-7xbp-qkvv-bqgm" }, { "vulnerability": "VCID-8735-ectc-j7a3" }, { "vulnerability": "VCID-9hdy-aqa2-w3bd" }, { "vulnerability": "VCID-9jb1-k32z-w7gw" }, { "vulnerability": "VCID-9jpj-dfsf-qkce" }, { "vulnerability": "VCID-9jw2-3v9v-ruap" }, { "vulnerability": "VCID-9kev-ferz-5bhr" }, { "vulnerability": "VCID-9x14-2t7m-1kbm" }, { "vulnerability": "VCID-bfap-h1d9-33dj" }, { "vulnerability": "VCID-cv4y-g4un-ckd4" }, { "vulnerability": "VCID-cxhw-3w24-dkes" }, { "vulnerability": "VCID-dpu2-4w42-kygw" }, { "vulnerability": "VCID-euma-vgqx-sbau" }, { "vulnerability": "VCID-f57c-kamk-3bct" }, { "vulnerability": "VCID-f5kd-yqz2-nkcb" }, { "vulnerability": "VCID-fmtp-x6y7-83g1" }, { "vulnerability": "VCID-g5u9-khw6-4kgn" }, { "vulnerability": "VCID-gcfd-w8je-kqfm" }, { "vulnerability": "VCID-gdur-h588-vbb6" }, { "vulnerability": "VCID-gmdj-a1ys-tqc2" }, { "vulnerability": "VCID-gtdh-mytb-t3fh" }, { "vulnerability": "VCID-h6na-nxxq-5yg9" }, { "vulnerability": "VCID-hdbf-118z-2yec" }, { "vulnerability": "VCID-hk8r-kk4v-1fa7" }, { "vulnerability": "VCID-jc3b-m4ud-n7fw" }, { "vulnerability": "VCID-jvnf-vh29-ufdh" }, { "vulnerability": "VCID-jxf4-y1au-5bhw" }, { "vulnerability": "VCID-khur-3ax7-9fhb" }, { "vulnerability": "VCID-n64w-nq6a-m7bv" }, { "vulnerability": "VCID-n6uz-fe7m-uqhk" }, { "vulnerability": "VCID-njbj-f91t-b7f4" }, { "vulnerability": "VCID-nqhj-d7uw-43hd" }, { "vulnerability": "VCID-srmp-3tvp-9uhv" }, { "vulnerability": "VCID-su8x-6n42-n3d5" }, { "vulnerability": "VCID-u24a-2khf-uyba" }, { "vulnerability": "VCID-u55w-unmd-97cm" }, { "vulnerability": "VCID-udcq-enxt-wyf1" }, { "vulnerability": "VCID-ugd8-9xzt-xbdz" }, { "vulnerability": "VCID-uvht-9bt9-hfbb" }, { "vulnerability": "VCID-v3m6-zajw-bfhb" }, { "vulnerability": "VCID-vugd-2jfz-23b5" }, { "vulnerability": "VCID-x3uy-7crx-2kae" }, { "vulnerability": "VCID-xfgd-4hs3-vygk" }, { "vulnerability": "VCID-xuyn-pjpb-g7du" }, { "vulnerability": "VCID-xxkx-w5pc-5uap" }, { "vulnerability": "VCID-zhf4-y8v8-gubn" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/wolfssl@5.5.4-2%252Bdeb12u2" }, { "url": "http://public2.vulnerablecode.io/api/packages/942887?format=api", "purl": "pkg:deb/debian/wolfssl@5.7.2-0.1%2Bdeb13u1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-15fz-hhc7-kyaa" }, { "vulnerability": "VCID-24mg-wn6a-6bew" }, { "vulnerability": "VCID-2ry7-trrg-gfdk" }, { "vulnerability": "VCID-3gve-u4f4-bkht" }, { "vulnerability": "VCID-4zda-zrq6-hbc8" }, { "vulnerability": "VCID-4zyq-af27-yqa4" }, { "vulnerability": "VCID-6v8z-cfax-zqbh" }, { 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"scoring_system": "epss", "scoring_elements": "0.17377", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00055", "scoring_system": "epss", "scoring_elements": "0.17283", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00055", "scoring_system": "epss", "scoring_elements": "0.17335", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00055", "scoring_system": "epss", "scoring_elements": "0.17343", "published_at": "2026-04-18T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-5477" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-5477", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-5477" }, { "reference_url": "https://github.com/wolfSSL/wolfssl/pull/10102", "reference_id": "10102", "reference_type": "", "scores": [ { "value": "8.2", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T14:03:53Z/" } ], "url": "https://github.com/wolfSSL/wolfssl/pull/10102" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1133835", "reference_id": "1133835", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1133835" } ], "weaknesses": [ { "cwe_id": 190, "name": "Integer Overflow or Wraparound", "description": "The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control." } ], "exploits": [], "severity_range_score": "8.2 - 8.2", "exploitability": "0.5", "weighted_severity": "7.4", "risk_score": 3.7, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-g5u9-khw6-4kgn" }