How severe is CVE-2017-12973?

CVE-2017-12973 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2017-12973 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12973?

CVE-2017-12973 primarily affects Connect2id Nimbus Jose+jwt. In total, 127 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-12973?

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

When was CVE-2017-12973 published?

CVE-2017-12973 was published on 2017-08-20 and last updated on 2026-06-17.

CVE-2017-12973

CVE-2017-12973 is a low-severity vulnerability in Connect2id Nimbus Jose+jwt with a CVSS 3.x base score of 3.1. 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-354.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-354
Affected product: Connect2id Nimbus Jose+jwt
Published: 2017-08-20
Last modified: 2026-06-17

Description

Nimbus JOSE+JWT before 4.39 proceeds improperly after detection of an invalid HMAC in authenticated AES-CBC decryption, which allows attackers to conduct a padding oracle attack.

Frequently asked questions

What is CVE-2017-12973?: Nimbus JOSE+JWT before 4.39 proceeds improperly after detection of an invalid HMAC in authenticated AES-CBC decryption, which allows attackers to conduct a padding oracle attack.
How severe is CVE-2017-12973?: CVE-2017-12973 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2017-12973 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12973?: CVE-2017-12973 primarily affects Connect2id Nimbus Jose+jwt. In total, 127 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-12973?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-12973 published?: CVE-2017-12973 was published on 2017-08-20 and last updated on 2026-06-17.

References

Affected products (127)

cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.0:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.2:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.3:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.4:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.5:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.6:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.7:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.8:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.9:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.10:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.11:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:1.12:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.0:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.2:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.3:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.4:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.5:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.6:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.7:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.8:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.9:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.10:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.10.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.11.0:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.12.0:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.13.0:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.13.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.14:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.15:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.15.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.15.2:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.16:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.17:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.17.1:*:*:*:*:*:*:*
cpe:2.3:a:connect2id:nimbus_jose\+jwt:2.17.2:*:*:*:*:*:*:*

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