How severe is CVE-2018-19516?

CVE-2018-19516 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-19516 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-2018-19516?

CVE-2018-19516 affects Kde Kde Applications. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-19516?

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

When was CVE-2018-19516 published?

CVE-2018-19516 was published on 2020-03-12 and last updated on 2026-06-17.

CVE-2018-19516

CVE-2018-19516 is a medium-severity vulnerability in Kde Kde Applications with a CVSS 3.x base score of 5.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Kde Kde Applications
Published: 2020-03-12
Last modified: 2026-06-17

Description

messagepartthemes/default/defaultrenderer.cpp in messagelib in KDE Applications before 18.12.0 does not properly restrict the handling of an http-equiv="REFRESH" value.

Frequently asked questions

What is CVE-2018-19516?: messagepartthemes/default/defaultrenderer.cpp in messagelib in KDE Applications before 18.12.0 does not properly restrict the handling of an http-equiv="REFRESH" value.
How severe is CVE-2018-19516?: CVE-2018-19516 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-19516 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-2018-19516?: CVE-2018-19516 affects Kde Kde Applications. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-19516?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-19516 published?: CVE-2018-19516 was published on 2020-03-12 and last updated on 2026-06-17.

References

https://cgit.kde.org/messagelib.git/commit/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp?id=34765909cdf8e55402a8567b48fb288839c61612

Affected products (1)

cpe:2.3:a:kde:kde_applications:*:*:*:*:*:*:*:*

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