How severe is CVE-2019-9154?

CVE-2019-9154 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-9154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9154?

CVE-2019-9154 affects Openpgpjs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9154?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-9154 published?

CVE-2019-9154 was published on 2019-08-22 and last updated on 2026-06-17.

CVE-2019-9154

CVE-2019-9154 is a high-severity vulnerability in Openpgpjs with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Openpgpjs
Published: 2019-08-22
Last modified: 2026-06-17

Description

Improper Verification of a Cryptographic Signature in OpenPGP.js <=4.1.2 allows an attacker to pass off unsigned data as signed.

Frequently asked questions

What is CVE-2019-9154?: Improper Verification of a Cryptographic Signature in OpenPGP.js <=4.1.2 allows an attacker to pass off unsigned data as signed.
How severe is CVE-2019-9154?: CVE-2019-9154 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-9154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9154?: CVE-2019-9154 affects Openpgpjs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9154?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-9154 published?: CVE-2019-9154 was published on 2019-08-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openpgpjs:openpgpjs:*:*:*:*:*:*:*:*

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