How severe is CVE-2018-1000418?

CVE-2018-1000418 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1000418 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000418?

CVE-2018-1000418 affects Atlassian Hipchat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000418?

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-2018-1000418 published?

CVE-2018-1000418 was published on 2019-01-09 and last updated on 2026-06-17.

CVE-2018-1000418

CVE-2018-1000418 is a high-severity vulnerability in Atlassian Hipchat with a CVSS 3.x base score of 8.8. 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 4.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Atlassian Hipchat
Published: 2019-01-09
Last modified: 2026-06-17

Description

An improper authorization vulnerability exists in Jenkins HipChat Plugin 2.2.0 and earlier in HipChatNotifier.java that allows attackers with Overall/Read access to send test notifications to an attacker-specified HipChat server with attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

Frequently asked questions

What is CVE-2018-1000418?: An improper authorization vulnerability exists in Jenkins HipChat Plugin 2.2.0 and earlier in HipChatNotifier.java that allows attackers with Overall/Read access to send test notifications to an attacker-specified HipChat server with attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
How severe is CVE-2018-1000418?: CVE-2018-1000418 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1000418 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000418?: CVE-2018-1000418 affects Atlassian Hipchat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000418?: 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-2018-1000418 published?: CVE-2018-1000418 was published on 2019-01-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:atlassian:hipchat:*:*:*:*:*:jenkins:*:*

More vulnerabilities in Atlassian Hipchat

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CVE-2018-1000419 — Medium (CVSS 6.5): An improper authorization vulnerability exists in Jenkins HipChat Plugin 2.2.0 and earlier in HipChatNotifier.java that…
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