How severe is CVE-2019-9553?

CVE-2019-9553 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-9553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9553?

CVE-2019-9553 affects Boltcms Bolt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9553?

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

When was CVE-2019-9553 published?

CVE-2019-9553 was published on 2019-12-31 and last updated on 2026-06-17.

CVE-2019-9553

CVE-2019-9553 is a medium-severity vulnerability in Boltcms Bolt with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Boltcms Bolt
Published: 2019-12-31
Last modified: 2026-06-17

Description

Bolt 3.6.4 has XSS via the slug, teaser, or title parameter to editcontent/pages, a related issue to CVE-2017-11128 and CVE-2018-19933.

Frequently asked questions

What is CVE-2019-9553?: Bolt 3.6.4 has XSS via the slug, teaser, or title parameter to editcontent/pages, a related issue to CVE-2017-11128 and CVE-2018-19933.
How severe is CVE-2019-9553?: CVE-2019-9553 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-9553 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9553?: CVE-2019-9553 affects Boltcms Bolt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9553?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-9553 published?: CVE-2019-9553 was published on 2019-12-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:boltcms:bolt:3.6.4:*:*:*:*:*:*:*

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