{
  "cveId": "CVE-2026-15055",
  "url": "https://patchblox.com/security/cve/CVE-2026-15055",
  "summary": "CVE-2026-15055 is fixed in bouncycastle on 1 platform, first by DEBIAN-CVE-2026-15055, released August 3, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "bouncycastle: This update for bouncycastle fixes the following issues:\n\n- CVE-2026-8763: Name Constraints bypass via trailing dot i...",
  "description": "This update for bouncycastle fixes the following issues:\n\n- CVE-2026-8763: Name Constraints bypass via trailing dot in rfc822Name and URI (bsc#1272700).\n- CVE-2026-12185: BKS/UBER keystore allocates from untrusted lengths before integrity check (bsc#1272701).\n- CVE-2026-12802: CMS AuthEnvelopedData fails to enforce tag-length on decryption (bsc#1272702).\n- CVE-2026-12803: KCCMBlockCipher MAC does not bind nonce when AAD is absent (bsc#1272703).\n- CVE-2026-12816: IESEngine stream-mode MAC forgery via length-dependent KDF split (bsc#1272704).\n- CVE-2026-12817: OpenPGP AEAD decryption skips final tag on chunk-aligned data (bsc#1272705).\n- CVE-2026-12852: MLS wire decoder allocates attacker-declared opaque length before bounds check (bsc#1272707).\n- CVE-2026-12860: RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path (bsc#1272708).\n- CVE-2026-13506: Lazy ASN.1 sequence forcing resets nesting-depth guard (bsc#1272709).\n- CVE-2026-13586: PKCS#12 MAC and bag-decryption KDF iteration-count bound (bsc#1272710).\n- CVE-2026-14682: Possible OOM from unbounded up-front allocation on a definite-length read (bsc#1272711).\n- CVE-2026-15055: PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input (bsc#1272712).\n- CVE-2026-58059: Quadratic-time escaping when stringifying X.500 distinguished names (bsc#1272713).\n- CVE-2026-58060: HSS public-key level count unbounded, enabling huge allocation on verify (bsc#1272714).\n- CVE-2026-58061: CCM-family modes write plaintext to caller buffer before tag check (bsc#1272715).\n- CVE-2026-58062: Stapled OCSP response accepted without binding to the checked certificate (bsc#1272716).\n- CVE-2026-58063: BCFKS keystore load honours unbounded KDF cost from untrusted file (bsc#1272717).\n- CVE-2026-59638: JSSE hostname verifier CN-fallback enabled by default despite documented opt-in (bsc#1272718).\n- CVE-2026-59639: CMS verifySignatures returns true for SignedData with zero signers (bsc#1272719).\n- CVE-2026-59640: OpenPGP CFB quick-check oracle active on symmetric/session-key paths (bsc#1272720).\n- CVE-2026-59641: S/MIME validator trusts signer-asserted signingTime for path validation (bsc#1272721).\n- CVE-2026-59642: CMS AuthenticatedData content not bound to MAC when authAttrs present (bsc#1272722).\n- CVE-2026-59643: OpenPGP inline-signature policy failures silently ignored (bsc#1272723).\n- CVE-2026-59644: MLS hash-ratchet honours arbitrary 32-bit generation counter from sender (bsc#1272724).\n- CVE-2026-59645: OER parser recurses without depth limit on self-referential IEEE 1609.2 schema (bsc#1272725).\n- CVE-2026-59646: DTLS handshake reassembler allocates buffer from unchecked 24-bit length (bsc#1272726).\n- CVE-2026-59647: CRMF/CMP password-MAC honours unbounded iteration count (bsc#1272727).\n- CVE-2026-59648: OpenPGP Argon2 S2K honours attacker-chosen memory and passes (bsc#1272728).\n- CVE-2026-59649: OpenPGP user-attribute subpacket length bounded only by JVM max memory (bsc#1272729).\n- CVE-2026-59650: MTI/A0 DH agreement exponentiates unvalidated peer value (bsc#1272730).\n- CVE-2026-59651: BKS keystore accepts legacy version with 16-bit integrity MAC key (bsc#1272731).\n- CVE-2026-59652: LDAP filter injection in legacy jdk1.4 LDAPStoreHelper (bsc#1272732).\n\nChanges for bouncycastle:\n\nUpdate to 1.85:\n  \n  * Additional Notes:\n\n  The standardised PQC algorithms ML-KEM, ML-DSA, SLH-DSA, FrodoKEM, \n  and CMCE have been repackaged under org.bouncycastle.crypto and \n  the versions under org.bouncycastle.crypto.pqc have been deprecated. \n  These deprecated versions will be removed in BC 1.86.",
  "published": "2026-08-03T01:16:43Z",
  "severity": "high",
  "cvss": 8.2,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
  "epss": 0.00339,
  "epssPercentile": 0.2747,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "Debian 14",
      "fixedVersion": "1.86-1",
      "fix": "DEBIAN-CVE-2026-15055",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-15055",
      "released": "2026-08-03T01:16:43Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.85-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21538-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21538-1",
      "released": "2026-08-06T07:36:52Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "sles 15.6",
      "fixedVersion": "1.85-150200.3.38.1",
      "fix": "SUSE-SU-2026:3559-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3559-1",
      "released": "2026-08-10T18:04:57Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "sles 15.7",
      "fixedVersion": "1.85-150200.3.38.1",
      "fix": "SUSE-SU-2026:3559-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3559-1",
      "released": "2026-08-10T18:04:57Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "sles 16.0",
      "fixedVersion": "1.85-160000.1.1",
      "fix": "SUSE-SU-2026:23150-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23150-1",
      "released": "2026-08-06T07:40:53Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}