CVE-2019-16378

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
82.7%
KEV
Not listed

Published

September 17, 2019

Last Modified

November 21, 2024

Advisory Details (9)

Auto-updated Jun 13, 2026
Patch available. Sources: github_pr.
generic

oss-security - OpenDMARC signature bypass with multiple From addresses

https://www.openwall.com/lists/oss-security/2019/09/11/8
generic

[SECURITY] [DSA 4526-1] opendmarc security update

https://www.debian.org/security/2019/dsa-4526
generic

Bugtraq: [SECURITY] [DSA 4526-1] opendmarc security update

https://seclists.org/bugtraq/2019/Sep/36
generic

[SECURITY] Fedora 30 Update: opendmarc-1.3.2-1.fc30 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7RT6ID7MBCEPNZEIUKK2TZIOCYPJR6E/
generic

[SECURITY] Fedora 29 Update: opendmarc-1.3.2-1.fc29 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEUBIHJLMPMB6KHOSGDMUQKSAW4HOCYM/
generic

[SECURITY] Fedora 31 Update: opendmarc-1.3.2-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEWDFGRKQHIWKFZH5BNWQDGUPNR7VH3/
github_pr

Fix multiple addresses in From vulnerability

Upstream fix in progress (PR #48 · trusteddomainproject/OpenDMARC, state=closed)

https://github.com/trusteddomainproject/OpenDMARC/pull/48
generic Patch Available

#940081 - opendmarc: CVE-2019-16378: signature bypass with multiple From addresses - Debian Bug report logs

https://bugs.debian.org/940081
generic

oss-security - Re: OpenDMARC signature bypass with multiple From addresses

http://www.openwall.com/lists/oss-security/2019/09/17/2

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturddmarc (1.3.2-3ubuntu0.1) @ bionic2026-05-27ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 22:21 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
  3. 2026-07-21 15:22 UTCEPSS rescore
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  5. 2026-07-20 17:04 UTCEPSS rescore
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  7. 2026-07-20 05:46 UTCOSV refresh
  8. 2026-07-19 14:28 UTCEPSS rescore
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  1. 2026-07-07 13:43 UTCEPSS rescore
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  5. 2026-07-05 02:27 UTCEPSS rescore
  6. 2026-07-04 06:28 UTCEPSS rescore
  7. 2026-07-02 22:35 UTCOSV refresh
  8. 2026-07-01 15:03 UTCEPSS rescore
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  10. 2026-06-30 23:20 UTCEPSS rescore
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  27. 2026-06-19 19:23 UTCEPSS rescore
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  29. 2026-06-18 17:50 UTCEPSS rescore
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  33. 2026-06-14 23:15 UTCEPSS rescore
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  35. 2026-06-14 18:13 UTCOSV refresh
  36. 2026-06-13 22:58 UTCEPSS rescore
  37. 2026-06-12 23:09 UTCEPSS rescore
  38. 2026-06-11 13:58 UTCEPSS rescore
  39. 2026-06-10 22:16 UTCEPSS rescore
  40. 2026-06-10 13:19 UTCEPSS rescore
  41. 2026-06-08 14:15 UTCEPSS rescore
  42. 2026-06-07 15:23 UTCEPSS rescore
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  44. 2026-06-06 13:45 UTCEPSS rescore
  45. 2026-06-06 13:45 UTCEPSS rescore
  46. 2026-06-05 22:45 UTCEPSS rescore
  47. 2026-06-05 22:45 UTCEPSS rescore
  48. 2026-06-05 06:08 UTCEPSS rescore
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  50. 2026-06-04 13:10 UTCEPSS rescore
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  52. 2026-06-02 20:11 UTCEPSS rescore
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  54. 2026-06-01 13:50 UTCEPSS rescore
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  56. 2026-05-31 22:29 UTCEPSS rescore
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  58. 2026-05-31 00:14 UTCEPSS rescore
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  60. 2026-05-29 13:42 UTCEPSS rescore
  61. 2026-05-28 13:43 UTCEPSS rescore
  62. 2026-05-27 14:29 UTCEG score recompute
  63. 2026-05-27 14:29 UTCVendor advisory
  64. 2026-05-27 14:29 UTCGHSA enrichment
  65. 2026-05-27 13:38 UTCEPSS rescore
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  67. 2026-05-26 13:42 UTCEPSS rescore
  68. 2026-05-26 07:17 UTCEPSS rescore
  69. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2019-16378?
CVE-2019-16378 is a critical vulnerability published on September 17, 2019. OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.
When was CVE-2019-16378 disclosed?
CVE-2019-16378 was first published in the National Vulnerability Database on September 17, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-16378 actively exploited?
CVE-2019-16378 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-16378?
CVE-2019-16378 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-16378?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-16378, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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