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CVE-2012-0869: Cross-site scripting (XSS) vulnerability in fup in Frams' Fast File EXchange (F*EX, aka fex) before 20120215 allows remote attackers to inje

Noroxi assessment

Priority: Monitor (action score 18/100)

  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 4.8% (FIRST EPSS); higher than 92% of all records.
  • Fixed version: fex (Debian:12) 20120215-1; fex (Debian:6.0) 20100208+debian1-1+squeeze2.

Low priority for now. Upgrade to fex (Debian:12) 20120215-1; fex (Debian:6.0) 20100208+debian1-1+squeeze2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Cross-site scripting (XSS) vulnerability in fup in Frams' Fast File EXchange (F*EX, aka fex) before 20120215 allows remote attackers to inject arbitrary web script or HTML via the id parameter.

MediumCVSS 4.3 · v2.0—Proof of concept Fix available
Published
Sep 25, 2012
Updated
Jun 16, 2026
EPSS
4.8% · 92th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 4.8%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2012-0869

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
ulli horlacherfex

Limit the impact of XSS

This is a cross-site scripting (XSS) vulnerability. A well-configured Content-Security-Policy doesn't fix it, but greatly reduces its impact. Check your site's CSP and other security headers for free.

Check security headers

Affected versions

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

  • ulli horlacher fexup to 20120207 inclusive
  • ulli horlacher fex20100208
  • ulli horlacher fex20110609
  • ulli horlacher fex20110610
  • ulli horlacher fex20110614
  • ulli horlacher fex20110615
  • ulli horlacher fex20110616
  • ulli horlacher fex20110621
  • ulli horlacher fex20110622
  • ulli horlacher fex20110627
  • ulli horlacher fex20110630
  • ulli horlacher fex20110701
  • ulli horlacher fex20110714
  • ulli horlacher fex20110716
  • ulli horlacher fex20110722
  • ulli horlacher fex20110726
  • ulli horlacher fex20110727
  • ulli horlacher fex20110730
  • ulli horlacher fex20110731
  • ulli horlacher fex20110803

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12fexbefore 20120215-120120215-1
Debian:6.0fexbefore 20100208+debian1-1+squeeze220100208+debian1-1+squeeze2

Same product

ulli horlacher: all records

Other highest-scoring records for the same primary product.

  • CVE-2014-3875The addto parameter to fup in Frams' Fast File EXchange (F*EX, aka fex) before fex-2014053 allows remote attackers to conduct cross-site scr
    25Monitor
  • CVE-2011-1409Frams's Fast File EXchange (F*EX, aka fex) 20100208, and possibly other versions before 20110610, allows remote attackers to bypass authenti
    21Monitor
  • CVE-2014-3877Incomplete blacklist vulnerability in Frams' Fast File EXchange (F*EX, aka fex) before fex-20140530 allows remote attackers to conduct cross
    18Monitor

Published before and after this one in the same product

  • Later →CVE-2012-1293Sep 25, 2012 · Multiple cross-site scripting (XSS) vulnerabilities in fup in Frams' Fast File EXchange (F*EX, aka fex) before 20111129-2 allow remote attac
    18Monitor
  • Later →CVE-2014-3876Jun 18, 2014 · Multiple cross-site scripting (XSS) vulnerabilities in Frams' Fast File EXchange (F*EX, aka fex) before fex-20140530 allow remote attackers
    18Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
debian:fex20120215-1 · Debian:12Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrywebapps2012-02-20

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.

  1. First PoC-219 d
  2. Published
  3. TodayNov 6, 2026+5155 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

No commit or PR link among the references.

Credits

All researchers

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

No credits in the CNA record.

Variant candidates

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

No nightly-computed relations.

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

    If successful

    Confidentiality
    none
    Integrity
    P · data or configuration can be modified
    Availability
    none
    Attack complexity
    M
    Confidentiality impact
    None
    Integrity impact
    P
    Availability impact
    None

    Weakness class (CWE)

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

    CVSS vector

    AV:N/AC:M/Au:N/C:N/I:P/A:N

    nvd-primary

    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

    —

    Change log

    1. Fix✗ → ✓

    For records you follow, these changes also arrive as notifications. →

    References

    Show all references (10 more)

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

    All records