How severe is CVE-2011-3371?

CVE-2011-3371 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-3371 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3371?

CVE-2011-3371 primarily affects Punbb. In total, 49 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3371?

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

When was CVE-2011-3371 published?

CVE-2011-3371 was published on 2011-10-02 and last updated on 2026-06-16.

CVE-2011-3371

CVE-2011-3371 is a medium-severity vulnerability in Punbb with a CVSS 2.0 base score of 4.3. 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 2.0 base score 4.3)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Punbb
Published: 2011-10-02
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in include/functions.php in PunBB before 1.3.6 allow remote attackers to inject arbitrary web script or HTML via the (1) id, (2) form_sent, (3) csrf_token, (4) req_confirm, or (5) delete parameter to delete.php, the (6) id, (7) form_sent, (8) csrf_token, (9) req_message, or (10) submit parameter to edit.php, the (11) action, (12) form_sent, (13) csrf_token, (14) req_email, or (15) request_pass parameter to login.php, the (16) email, (17) form_sent, (18) redirect_url, (19) csrf_token, (20) req_subject, (21) req_message, or (22) submit parameter to misc.php, the (23) action, (24) id, (25) form_sent, (26) csrf_token, (27) req_old_password, (28) req_new_password1, (29) req_new_password2, or (30) update parameter to profile.php, or the (31) action, (32) form_sent, (33) csrf_token, (34) req_username, (35) req_password1, (36) req_password2, (37) req_email1, (38) timezone, or (39) register parameter to register.php.

Frequently asked questions

What is CVE-2011-3371?: Multiple cross-site scripting (XSS) vulnerabilities in include/functions.php in PunBB before 1.3.6 allow remote attackers to inject arbitrary web script or HTML via the (1) id, (2) form_sent, (3) csrf_token, (4) req_confirm, or (5) delete parameter to delete.php, the (6) id, (7) form_sent, (8) csrf_token, (9) req_message, or (10) submit parameter to edit.php, the (11) action, (12) form_sent, (13) csrf_token, (14) req_email, or (15) request_pass parameter to login.php, the (16) email, (17) form_sent, (18) redirect_url, (19) csrf_token, (20) req_subject, (21) req_message, or (22) submit parameter to misc.php, the (23) action, (24) id, (25) form_sent, (26) csrf_token, (27) req_old_password, (28) req_new_password1, (29) req_new_password2, or (30) update parameter to profile.php, or the (31) action, (32) form_sent, (33) csrf_token, (34) req_username, (35) req_password1, (36) req_password2, (37) req_email1, (38) timezone, or (39) register parameter to register.php.
How severe is CVE-2011-3371?: CVE-2011-3371 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-3371 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3371?: CVE-2011-3371 primarily affects Punbb. In total, 49 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3371?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3371 published?: CVE-2011-3371 was published on 2011-10-02 and last updated on 2026-06-16.

References

Affected products (49)

cpe:2.3:a:punbb:punbb:*:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:alpha:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:beta1a:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:beta2:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:beta3:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.1:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.10:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.11:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.12:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.13:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.14:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.15:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.16:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.17:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.18:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.19:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.20:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.21:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.22:*:*:*:*:*:*:*
cpe:2.3:a:punbb:punbb:1.2.23:*:*:*:*:*:*:*

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