CVE-2017-7271: Reflected Cross-site scripting (XSS) vulnerability in Yii Framework before 2.0.11, when development mode is us

Q: How do I fix CVE-2017-7271?

yii: upgrade to newer than 2.0.10. Exact commands for each OS are on this page.

Q: Is CVE-2017-7271 being exploited?

CVE-2017-7271 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-7271 affect?

CVE-2017-7271 affects yii. Severity is medium (CVSS 6.1). Reflected Cross-site scripting (XSS) vulnerability in Yii Framework before 2.0.11, when development mode is used, allows remote attackers to inject arbitrary web script or HTML via crafted request data that is mishandled on the debug-mode e

Q: How urgent is CVE-2017-7271?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2017-7271 is a medium-severity flaw (CVSS 6.1) affecting yii. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reflected Cross-site scripting (XSS) vulnerability in Yii Framework before 2.0.11, when development mode is used, allows remote attackers to inject arbitrary web script or HTML via crafted request data that is mishandled on the debug-mode exception screen.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-03-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yii software

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-03-27 17:59 UTCPublished CVE record published
2026-06-17 01:23 UTCUpdated Record last modified

yii software yii UPGRADE

Affected: <= 2.0.10

Fixed in: newer than 2.0.10

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy yii || rpm -q yii || yii --version

2. UPGRADE to newer than 2.0.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade yii

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade yii

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-7271?

yii: upgrade to newer than 2.0.10. Exact commands for each OS are on this page.

Is CVE-2017-7271 being exploited?

CVE-2017-7271 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-7271 affect?

CVE-2017-7271 affects yii. Severity is medium (CVSS 6.1). Reflected Cross-site scripting (XSS) vulnerability in Yii Framework before 2.0.11, when development mode is used, allows remote attackers to inject arbitrary web script or HTML via crafted request data that is mishandled on the debug-mode e

How urgent is CVE-2017-7271?

Priority 37/100. No elevated risk signals yet.

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References

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