CVE-2014-3146

MEDIUMNVD 6.16.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 6.1 from GitHub Security Advisory (severity: MODERATE) published 2022-05-14. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekWeaponized

Also known asEUVD-2014-0033 (ENISA EUVD) · GHSA-57qw-cc2g-pv5p (GitHub Security Advisories)Source: ENISA EUVD

6.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • Public exploit code is available (Exploit-DB, marked verified by Exploit-DB)
CISA-KEV: Not listedEPSS PROB: 6.3%CVSS: 6.1Exploit: Exploit-DB (verified)Exposed services: Not assessed

A fix is available — apply it.

Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting (XSS) attacks via control characters in the link scheme to the clean_html function.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
53
EG Risk 53/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity61% × 45%
Impact severity (EG Severity): CVSS 6.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
6.3%
EPSS %ILE
93rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.1): severity, escalated by confirmed exploitation. This CVE's 6.1 is its impact severity (EG Severity), not escalated.

EG Severity
6.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
6.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 14, 2014

Last Modified

May 6, 2026

Advisory Details (8)

Auto-updated May 7, 2026
Patch available.
Web page

[SECURITY] [DSA 2941-1] lxml security update

http://www.debian.org/security/2014/dsa-2941
Web page

About Secunia Research | Flexera

http://secunia.com/advisories/59008
Web page

About Secunia Research | Flexera

http://secunia.com/advisories/58744
Web page

About Secunia Research | Flexera

http://secunia.com/advisories/58013
Web page

Full Disclosure: Re: lxml (python lib) vulnerability

http://seclists.org/fulldisclosure/2014/Apr/319
Web page

Full Disclosure: lxml (python lib) vulnerability

http://seclists.org/fulldisclosure/2014/Apr/210
Web page

Mageia Advisory: MGASA-2014-0218 - Updated python-lxml package fix CVE-2014-3146

http://advisories.mageia.org/MGASA-2014-0218.html

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3-lxml (3.3.3-1ubuntu0.1) @ trusty2026-10-25ubuntu
piplxml @ 3.3.5 (fixes < 3.3.5)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(7 across 7 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
lxml—
  • every version up to 3.3.5-1: fixed in 3.3.5-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
lxml—
  • every version up to 3.3.5-1: fixed in 3.3.5-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
lxml—
  • every version up to 3.3.5-1: fixed in 3.3.5-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
lxml—
  • every version up to 3.3.5-1: fixed in 3.3.5-1
—
Debian:6.0(1)
PackageVulnerable rangeFix by version rangeDependents
lxml2.2.8-2
  • every version up to 2.2.8-2+deb6u1: fixed in 2.2.8-2+deb6u1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
lxml2.3.2-1
  • every version up to 2.3.2-1+deb7u1: fixed in 2.3.2-1+deb7u1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
lxml0.9 ... 3.3.4 (101 versions)
  • every version up to 3.3.5: fixed in 3.3.5
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 97 of 183 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 100 are merged into the row they repeat. The 86 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  2. 2026-11-01 08:49 UTCGHSA enrichmentGHSA-57qw-cc2g-pv5p · GitHub severity MODERATE · GitHub CVSS 6.1
  3. 2026-11-01 08:49 UTCEG score recompute
  4. 2026-10-31 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  5. 2026-10-30 16:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  6. 2026-10-29 16:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  7. 2026-10-28 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  8. 2026-10-27 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  9. 2026-10-26 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  10. 2026-10-25 20:02 UTCEG score recompute
  11. 2026-10-25 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  12. 2026-10-25 10:28 UTCEG score recompute
  13. 2026-10-25 10:28 UTCVendor advisory
  14. 2026-10-24 16:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  15. 2026-10-23 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  16. 2026-10-23 08:25 UTCOSV refresh
  17. 2026-10-22 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  18. 2026-10-21 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  19. 2026-10-20 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  20. 2026-10-19 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  21. 2026-10-18 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  22. 2026-10-18 11:12 UTCEG score recompute
  23. 2026-10-17 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  24. 2026-10-16 16:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  25. 2026-10-15 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
Show 72 more
  1. 2026-10-14 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  2. 2026-10-13 16:26 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  3. 2026-10-12 21:18 UTCEG score recompute
  4. 2026-10-12 16:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  5. 2026-10-12 01:25 UTCEG score recompute
  6. 2026-10-11 13:40 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  7. 2026-10-10 19:54 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  8. 2026-10-09 20:01 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  9. 2026-10-08 16:34 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  10. 2026-10-07 23:39 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  11. 2026-10-06 15:11 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  12. 2026-10-05 17:38 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  13. 2026-10-04 23:17 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  14. 2026-10-03 14:21 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  15. 2026-10-01 19:43 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  16. 2026-09-30 14:58 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  17. 2026-09-30 00:22 UTCEG score recompute
  18. 2026-09-29 21:41 UTCOSV refresh
  19. 2026-09-28 13:45 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  20. 2026-09-27 13:39 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  21. 2026-09-26 15:53 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  22. 2026-09-20 20:08 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  23. 2026-09-18 19:21 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  24. 2026-09-17 19:21 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  25. 2026-09-15 03:04 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  26. 2026-09-12 14:55 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  27. 2026-09-11 09:31 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  28. 2026-09-10 16:53 UTCOSV refresh
  29. 2026-09-07 15:56 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  30. 2026-09-06 13:42 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  31. 2026-09-05 15:23 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  32. 2026-09-04 13:55 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  33. 2026-09-02 14:07 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  34. 2026-09-01 13:48 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  35. 2026-08-30 19:12 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  36. 2026-08-28 21:34 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  37. 2026-08-27 14:20 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  38. 2026-08-26 14:41 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  39. 2026-08-25 13:44 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  40. 2026-08-23 10:52 UTCOSV refresh
  41. 2026-08-21 23:44 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  42. 2026-08-20 22:50 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  43. 2026-08-19 16:59 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  44. 2026-08-18 13:43 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  45. 2026-08-16 14:51 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  46. 2026-08-16 02:09 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  47. 2026-08-15 01:25 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  48. 2026-08-12 13:46 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  49. 2026-08-09 13:42 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  50. 2026-08-08 16:31 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  51. 2026-08-07 16:21 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  52. 2026-08-07 12:57 UTCOSV refresh
  53. 2026-08-06 13:42 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  54. 2026-08-05 19:12 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  55. 2026-08-04 15:04 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  56. 2026-08-02 02:22 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  57. 2026-08-01 04:11 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  58. 2026-07-30 16:23 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  59. 2026-07-30 01:26 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  60. 2026-07-28 15:31 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  61. 2026-07-24 14:13 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  62. 2026-07-23 14:14 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  63. 2026-07-23 01:12 UTCEG score recompute
  64. 2026-07-23 00:16 UTCEG score recompute
  65. 2026-07-22 21:54 UTCEG score recompute
  66. 2026-07-22 14:04 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  67. 2026-07-22 05:48 UTCOSV refresh
  68. 2026-07-21 15:21 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  69. 2026-07-20 17:03 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  70. 2026-07-19 14:27 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  71. 2026-07-19 02:26 UTCEPSS rescoreEPSS 6.3% · 92nd percentile
  72. 2026-07-18 10:00 UTCEPSS rescoreEPSS 6.3% · 92nd percentile

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Exploit-DB entry). Defenders should treat patch urgency accordingly.

  • Exploit-DBEDB-39155✓ verified
    Published Apr 15, 2014

    lxml - 'clean_html' Security Bypass

    Open source ↗

Frequently asked(5)

What is CVE-2014-3146?
CVE-2014-3146 is a medium-severity vulnerability; its CVE record was published on May 14, 2014. Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting (XSS) attacks via control characters in the link scheme to the clean_html function.
When was CVE-2014-3146 made public?
CVE-2014-3146 was made public on April 15, 2014: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on May 14, 2014. EchelonGraph's copy of the record carries a last-modified date of May 6, 2026; the record at its source may have been updated since.
Is CVE-2014-3146 actively exploited?
CVE-2014-3146 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 6.3% probability of exploitation in the next 30 days (93rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2014-3146?
CVE-2014-3146 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2014-3146?
A fix for CVE-2014-3146 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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