How severe is CVE-2019-12834?

CVE-2019-12834 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2019-12834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12834?

CVE-2019-12834 affects Ht2labs Learning Locker. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12834?

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-2019-12834 published?

CVE-2019-12834 was published on 2019-07-16 and last updated on 2026-06-17.

CVE-2019-12834

CVE-2019-12834 is a high-severity vulnerability in Ht2labs Learning Locker with a CVSS 3.x base score of 7.3. 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-79.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ht2labs Learning Locker
Published: 2019-07-16
Last modified: 2026-06-17

Description

In HT2 Labs Learning Locker 3.15.1, it's possible to inject malicious HTML and JavaScript code into the DOM of the website via the PATH_INFO to the dashboards/ URI.

Frequently asked questions

What is CVE-2019-12834?: In HT2 Labs Learning Locker 3.15.1, it's possible to inject malicious HTML and JavaScript code into the DOM of the website via the PATH_INFO to the dashboards/ URI.
How severe is CVE-2019-12834?: CVE-2019-12834 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2019-12834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12834?: CVE-2019-12834 affects Ht2labs Learning Locker. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12834?: 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-2019-12834 published?: CVE-2019-12834 was published on 2019-07-16 and last updated on 2026-06-17.

References

https://github.com/miruser/Roche-CVEs/blob/master/CVE-2019-12834.md

Affected products (1)

cpe:2.3:a:ht2labs:learning_locker:3.15.1:*:*:*:*:*:*:*

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