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CVE-2025-8553· NVD / CVE Program· CNA VulDB

atjiu pybbs list cross site scripting

A vulnerability classified as problematic was found in atjiu pybbs up to 6.0.0. This vulnerability affects unknown code of the file /admin/sensitive_word/list. The manipulation of the argument word leads to cross site scripting. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as 2fe4a51afbce0068c291bc1818bbc8f7f3b01a22. It is recommended to apply a patch to fix this issue.

LowCVSS 1.9 · v4.0—No exploit No fix recorded
Published
Aug 5, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 15th percentile
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Action score

7

Monitor

Low priority for now.

CVSS
7 / 40 · 1.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
4.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
pybbs projectpybbs

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • pybbs project pybbsup to 6.0.0 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • atjiu pybbs

    • 6.0affected

Same product

pybbs project: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-28702A SQL injection vulnerability in TopicMapper.xml of PybbsCMS v5.2.1 allows attackers to access sensitive database information.
    30Monitor
  • CVE-2022-23391A cross-site scripting (XSS) vulnerability in Pybbs v6.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload ins
    24Monitor
  • CVE-2025-8547atjiu pybbs Email Verification improper authorization
    22Monitor
  • CVE-2025-8546atjiu pybbs Verification Code login Captcha
    22Monitor
  • CVE-2025-8549atjiu pybbs UserAdminController.java update weak password
    11Monitor
  • CVE-2025-8548atjiu pybbs Registered Email SettingsApiController.java sendEmailCode information exposure
    11Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-85510 days apartatjiu pybbs list cross site scripting
    8Monitor
  • CVE-2025-85550 days apartatjiu pybbs search cross site scripting
    8Monitor
  • CVE-2025-85500 days apartatjiu pybbs list cross site scripting
    7Monitor
  • CVE-2025-85520 days apartatjiu pybbs list cross site scripting
    7Monitor
  • CVE-2025-85540 days apartatjiu pybbs list cross site scripting
    7Monitor
  • CVE-2025-88125 days apartatjiu pybbs Admin Panel settings cross site scripting
    7Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
P
Scope
X

Weakness class (CWE)

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

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records