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Fencer Vulns
high 7.4

CVE-2023-1881 json

Cross-site Scripting (XSS) - Stored in microweber/microweber

published 2023-04-05 3 y ago modified 2026-06-17 4 mo ago also GHSA-hhjm-mpmf-cxg9 , EUVD-2023-1325

cvss
7.4
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

Cross-site Scripting (XSS) - Stored in GitHub repository microweber/microweber prior to 1.3.3.

Patch / fix

  • packagist microweber/microweber 1.3.3
  • microweber microweber/microweber 1.3.3

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/d5ebc2bd-8638-41c4-bf72-7c906c601344 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.4 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
packagist microweber/microweber
<1.3.3
1.3.3

Affected products

  • microweber microweber/microweber

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.