How severe is CVE-2017-8898?

CVE-2017-8898 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-8898 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8898?

CVE-2017-8898 affects Invisioncommunity Invision Power Board. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8898?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-8898 published?

CVE-2017-8898 was published on 2017-05-11 and last updated on 2026-06-17.

CVE-2017-8898

CVE-2017-8898 is a critical-severity vulnerability in Invisioncommunity Invision Power Board with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Invisioncommunity Invision Power Board
Published: 2017-05-11
Last modified: 2026-06-17

Description

Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has stored XSS in the Announcements, allowing privilege escalation from an Invision Power Board moderator to an admin. An attack uses the announce_content parameter in an index.php?/modcp/announcements/&action=create request. This is related to the "<> Source" option.

Frequently asked questions

What is CVE-2017-8898?: Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has stored XSS in the Announcements, allowing privilege escalation from an Invision Power Board moderator to an admin. An attack uses the announce_content parameter in an index.php?/modcp/announcements/&action=create request. This is related to the "<> Source" option.
How severe is CVE-2017-8898?: CVE-2017-8898 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-8898 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8898?: CVE-2017-8898 affects Invisioncommunity Invision Power Board. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8898?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-8898 published?: CVE-2017-8898 was published on 2017-05-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:invisioncommunity:invision_power_board:*:*:*:*:*:*:*:*

More vulnerabilities in Invisioncommunity Invision Power Board

CVE-2012-5692 — Critical (CVSS 10.0): Unspecified vulnerability in admin/sources/base/core.php in Invision Power Board (aka IPB or IP.Board) 3.1.x through…
CVE-2013-3725 — Critical (CVSS 9.8): Invision Power Board (IPB) through 3.x allows admin account takeover leading to code execution.
CVE-2012-2226 — Critical (CVSS 9.8): Invision Power Board before 3.3.1 fails to sanitize user-supplied input which could allow remote attackers to obtain…
CVE-2014-4928 — High (CVSS 8.8): SQL injection vulnerability in Invision Power Board (aka IPB or IP.Board) before 3.4.6 allows remote attackers to…
CVE-2017-8899 — High (CVSS 8.1): Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has a composite of Stored XSS and Information…
CVE-2016-6174 — High (CVSS 8.1): applications/core/modules/front/system/content.php in Invision Power Services IPS Community Suite (aka Invision Power…

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