How severe is CVE-2018-12587?

CVE-2018-12587 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-2018-12587 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12587?

CVE-2018-12587 affects German Spelling Dictionary Project German Spelling Dictionary. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12587?

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

When was CVE-2018-12587 published?

CVE-2018-12587 was published on 2018-08-13 and last updated on 2026-06-17.

CVE-2018-12587

CVE-2018-12587 is a medium-severity vulnerability in German Spelling Dictionary Project German Spelling Dictionary 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: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: German Spelling Dictionary Project German Spelling Dictionary
Published: 2018-08-13
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) vulnerability was found in valeuraddons German Spelling Dictionary v1.3 (an Opera Browser add-on). Instead of providing text for a spelling check, remote attackers may inject arbitrary web script or HTML via the ajax query parameter in the URL Address Bar.

Frequently asked questions

What is CVE-2018-12587?: A cross-site scripting (XSS) vulnerability was found in valeuraddons German Spelling Dictionary v1.3 (an Opera Browser add-on). Instead of providing text for a spelling check, remote attackers may inject arbitrary web script or HTML via the ajax query parameter in the URL Address Bar.
How severe is CVE-2018-12587?: CVE-2018-12587 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-2018-12587 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12587?: CVE-2018-12587 affects German Spelling Dictionary Project German Spelling Dictionary. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12587?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-12587 published?: CVE-2018-12587 was published on 2018-08-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:german_spelling_dictionary_project:german_spelling_dictionary:1.3:*:*:*:*:opera:*:*

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