How severe is CVE-2017-5553?

CVE-2017-5553 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-5553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5553?

CVE-2017-5553 affects B2evolution. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-5553?

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

When was CVE-2017-5553 published?

CVE-2017-5553 was published on 2017-01-23 and last updated on 2026-06-17.

CVE-2017-5553

CVE-2017-5553 is a medium-severity vulnerability in B2evolution with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: B2evolution
Published: 2017-01-23
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in plugins/markdown_plugin/_markdown.plugin.php in b2evolution before 6.8.5 allows remote authenticated users to inject arbitrary web script or HTML via a javascript: URL.

Frequently asked questions

What is CVE-2017-5553?: Cross-site scripting (XSS) vulnerability in plugins/markdown_plugin/_markdown.plugin.php in b2evolution before 6.8.5 allows remote authenticated users to inject arbitrary web script or HTML via a javascript: URL.
How severe is CVE-2017-5553?: CVE-2017-5553 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-5553 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5553?: CVE-2017-5553 affects B2evolution. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-5553?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-5553 published?: CVE-2017-5553 was published on 2017-01-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:b2evolution:b2evolution:*:*:*:*:*:*:*:*

More vulnerabilities in B2evolution

CVE-2016-8901 — Critical (CVSS 9.8): b2evolution 6.7.6 suffer from an Object Injection vulnerability in /htsrv/call_plugin.php.
CVE-2017-1000423 — Critical (CVSS 9.8): b2evolution version 6.6.0 - 6.8.10 is vulnerable to input validation (backslash and single quote escape) in basic…
CVE-2022-30935 — Critical (CVSS 9.1): An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for…
CVE-2017-5539 — Critical (CVSS 9.1): The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An…
CVE-2021-28242 — High (CVSS 8.8): SQL Injection in the "evoadm.php" component of b2evolution v7.2.2-stable allows remote attackers to obtain sensitive…
CVE-2017-5480 — High (CVSS 8.1): Directory traversal vulnerability in inc/files/files.ctrl.php in b2evolution through 6.8.3 allows remote authenticated…

All CVEs affecting B2evolution →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →