How severe is CVE-2019-9155?

CVE-2019-9155 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-9155 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9155?

CVE-2019-9155 affects Openpgpjs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9155?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-9155 published?

CVE-2019-9155 was published on 2019-08-22 and last updated on 2026-06-17.

CVE-2019-9155

CVE-2019-9155 is a medium-severity vulnerability in Openpgpjs with a CVSS 3.x base score of 5.9. 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-327.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Openpgpjs
Published: 2019-08-22
Last modified: 2026-06-17

Description

A cryptographic issue in OpenPGP.js <=4.2.0 allows an attacker who is able provide forged messages and gain feedback about whether decryption of these messages succeeded to conduct an invalid curve attack in order to gain the victim's ECDH private key.

Frequently asked questions

What is CVE-2019-9155?: A cryptographic issue in OpenPGP.js <=4.2.0 allows an attacker who is able provide forged messages and gain feedback about whether decryption of these messages succeeded to conduct an invalid curve attack in order to gain the victim's ECDH private key.
How severe is CVE-2019-9155?: CVE-2019-9155 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-9155 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9155?: CVE-2019-9155 affects Openpgpjs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9155?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-9155 published?: CVE-2019-9155 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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