CVE-2026-85515
validatedZero produced an exploit or a check.GHSA-8hgf-w73g-3x6v ↗EUVD-2026-91988 ↗
description
bcpg versions before 1.86 can fail to report some truncated OpenPGP encrypted messages, potentially causing applications to accept incomplete data or lose trailing packet content. On the main BC-JAVA SEIPD v1 path, affected message shapes can also bypass integrity verification and yield modified plaintext; exploitation requires an application to process a suitably truncated encrypted message through an affected path.
mitigation
Upgrade bcpg to 1.86 or later, bcpg-lts8on to 2.73.13 or later, and bcpg-fips to 1.0.14, 2.0.14.1, or 2.1.14 or later for the corresponding release series. Until upgraded, reject truncated encrypted inputs and explicitly invoke integrity verification where the application API permits it.
fixed in 1.86, 2.73.13, 1.0.14, 2.0.14.1, 2.1.14
outcome
Mechanism verified: the exploit fired on the vulnerable build and stayed silent on the patched one, but the server it ran against was ours, so no check ships for it.
source signals
Public signals that triggered or updated the pipeline. These are inputs for the deltas above.
- 2026-10-03 08:05Zcve_org: trigger signal, started the run
this entry in the feed
GET /api/v1/feed/CVE-2026-85515
{ "etk_id": "ETK-2026-442", "cve_id": "CVE-2026-85515", "display_id": "CVE-2026-85515", "ghsa_id": "GHSA-8hgf-w73g-3x6v", "euvd_id": "EUVD-2026-91988", "status": "published", "anchor_state": "anchored", "title": "bcpg OpenPGP truncation validation failure", "summary": "bcpg versions before 1.86 can fail to report some truncated OpenPGP encrypted messages, potentially causing applications to accept incomplete data or lose trailing packet content. On the main BC-JAVA SEIPD v1 path, affected message shapes can also bypass integrity verification and yield modified plaintext; exploitation requires an application to process a suitably truncated encrypted message through an affected path.", "mitigation": "Upgrade bcpg to 1.86 or later, bcpg-lts8on to 2.73.13 or later, and bcpg-fips to 1.0.14, 2.0.14.1, or 2.1.14 or later for the corresponding release series. Until upgraded, reject truncated encrypted inputs and explicitly invoke integrity verification where the application API permits it.", "vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-JAVA", "affected": [ { "affected_notes": [], "affected_ranges": [ ">= 1.74, < 1.86" ], "ecosystem": null, "fixed_versions": [ "1.86" ], "package_name": "bcpg", "purl": null }, { "affected_notes": [], "affected_ranges": [ ">= 2.73.0, < 2.73.13" ], "ecosystem": null, "fixed_versions": [ "2.73.13" ], "package_name": "bcpg-lts8on", "purl": null }, { "affected_notes": [], "affected_ranges": [ ">= 1.0.7, < 1.0.14", ">= 2.0.7, < 2.0.14.1", ">= 2.1.0, < 2.1.14" ], "ecosystem": null, "fixed_versions": [ "1.0.14", "2.0.14.1", "2.1.14" ], "package_name": "bcpg-fips", "purl": null } ], "cwes": [ 354 ], "cvss_score": 8.2, "cvss_src": "cna_vendor", "cvss_vector": "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/U:Amber", "epss_score": 0.0016, "epss_percentile": 0.044, "epss_asof": "2026-10-20", "automation": "contextual", "check": true, "check_confidence_basis": "mechanism_verified", "exploit": false, "pipeline_minutes": 28.56406623333333, "t0_at": "2026-10-03T08:05:16.553000+00:00", "signals": { "check": { "at": "2026-10-03T11:22:51.200679+00:00", "days": 0.1372065703587963, "is_lower_bound": false, "measured_at": "2026-10-03T08:05:16.553000+00:00", "url": null }, "trigger_signal": { "at": "2026-10-03T08:05:16.553000+00:00", "days": 0, "is_lower_bound": false, "measured_at": "2026-10-03T08:05:16.553000+00:00", "url": "https://www.cve.org/CVERecord?id=CVE-2026-85515" } } }
published 2026-10-03 09:22Z
last change 2026-10-21 18:33Z
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