When you visit a page where you need to login, Plone 2.5-5.1rc1 sends you to the login form with a 'came_from' parameter set to the previous url. After you login, you get redirected to the page you tried to view before. An attacker might try to abuse this by letting you click on a specially crafted link. You would login, and get redirected to the site of the attacker, letting you think that you are still on the original Plone site. Or some javascript of the attacker could be executed. Most of these types of attacks are already blocked by Plone, using the isURLInPortal check to make sure we only redirect to a page on the same Plone site. But a few more ways of tricking Plone into accepting a malicious link were discovered, and fixed with this hotfix.
CVE-2017-1000481
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EPSS
- 48.0%
- KEV
- Not listed
Published
January 3, 2018
Last Modified
November 21, 2024
References (2)
- cve@mitrehttps://plone.org/security/hotfix/20171128/open-redirection-on-login-form
- af854a3a-2127-422b-91ae-364da2661108https://plone.org/security/hotfix/20171128/open-redirection-on-login-form
Affected Packages
(2 across 1 ecosystem)
PyPI(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| plone | 3.2 ... 5.1rc2 (109 versions) | 5.1.0 | — |
| products-cmfplone | 5.1a1 ... 5.1rc2 (7 versions) | 5.1.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:24 UTCEPSS rescore
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- 2026-06-16 03:13 UTCOSV refresh
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- 2026-05-28 12:56 UTCEG score recompute
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-25 12:46 UTCOSV refresh
- 2026-05-24 16:44 UTCEPSS rescore
Frequently asked(5)
What is CVE-2017-1000481?
When was CVE-2017-1000481 disclosed?
Is CVE-2017-1000481 actively exploited?
What is the CVSS score of CVE-2017-1000481?
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Dependency Blast Radius
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