CVE-2013-4891

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.0% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-02-21 16:00Z8 YR AGO

Last updated

2024-08-06 16:59Z2 YR AGO

Reserved

2013-07-24

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

2333f58c3042a366b223a333a8262142af834baf22947df59681141e009f17a1

• nealpoole.comhttps://nealpoole.com/blog/2013/07/codeigniter-21-xss-clean-filter-bypass/x_refsource_MISC
• github.comhttps://github.com/bcit-ci/CodeIgniter/issues/4020x_refsource_CONFIRM
• www.codeigniter.comhttps://www.codeigniter.com/userguide2/changelog.htmlx_refsource_CONFIRM