How severe is CVE-2018-1000841?

CVE-2018-1000841 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-2018-1000841 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000841?

CVE-2018-1000841 affects Zend Zendto. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000841?

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

When was CVE-2018-1000841 published?

CVE-2018-1000841 was published on 2018-12-20 and last updated on 2026-06-17.

CVE-2018-1000841

CVE-2018-1000841 is a medium-severity vulnerability in Zend Zendto 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% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Zend Zendto
Published: 2018-12-20
Last modified: 2026-06-17

Description

Zend.To version Prior to 5.15-1 contains a Cross Site Scripting (XSS) vulnerability in The verify.php page that can result in An attacker could execute arbitrary Javascript code in the context of the victim's browser.. This attack appear to be exploitable via HTTP POST request. This vulnerability appears to have been fixed in 5.16-1 Beta.

Frequently asked questions

What is CVE-2018-1000841?: Zend.To version Prior to 5.15-1 contains a Cross Site Scripting (XSS) vulnerability in The verify.php page that can result in An attacker could execute arbitrary Javascript code in the context of the victim's browser.. This attack appear to be exploitable via HTTP POST request. This vulnerability appears to have been fixed in 5.16-1 Beta.
How severe is CVE-2018-1000841?: CVE-2018-1000841 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-2018-1000841 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000841?: CVE-2018-1000841 affects Zend Zendto. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000841?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000841 published?: CVE-2018-1000841 was published on 2018-12-20 and last updated on 2026-06-17.

References

https://zend.to/changelog.php

Affected products (1)

cpe:2.3:a:zend:zendto:*:*:*:*:*:*:*:*

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